The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-20-2009, 03:38 PM   #1
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 2,003
Question radio install ??

all,
i am in the process of wiring a new radio in the truck & have a few questions. first, how do you connect the radio power wires to the fuse block (stock) of the truck?
second, does anyone know what wires are used for the factory radio power wires?
the harness is new & is a stock replacement.

thanks for the help & replies!!
rodstored-72
rodstored-72 is offline   Reply With Quote
Old 05-20-2009, 03:47 PM   #2
red71c10
The Red Menace
 
red71c10's Avatar
 
Join Date: Feb 2009
Location: Roseburg, OR
Posts: 577
Re: radio install ??

It's just a big long heavy gauge red wire with a black plug on each end. Originally, one end plugged into the back of the radio along with the speaker wires, and the other end plugged into the fuse panel. The panel is labeled with the word radio and a tiny arrow pointing to the correct connection. I can post pictures if you need more info.
__________________
1971 Custom 10 - 350/350TH - Pwr steering, gauges, Chrome front bumper, Chrome hubcaps, Door edge guards, HD rear springs (current)
1968 C-20 Custom Camper - 350/350TH (orig 327), Pwr steering & brakes, gauges w/tach (former)
1968 C-20 - 307/3sp column (Dad's when I was a kid)

"Driving is like coloring. Things get messy if you can't stay inside the lines."
red71c10 is offline   Reply With Quote
Old 05-20-2009, 04:18 PM   #3
john
member #16
 
john's Avatar
 
Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
Re: radio install ??

fuse box
Attached Images
 
john is offline   Reply With Quote
Old 05-20-2009, 05:07 PM   #4
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 2,003
Re: radio install ??

john,
thanks for the reply. i noticed that on my panel too & so do i understand right that i just run a red "power" wire from the new radio to the "blade" connection onto that connection at the fuse panel?

thanks!!
rodstored-72 is offline   Reply With Quote
Old 05-20-2009, 05:28 PM   #5
john
member #16
 
john's Avatar
 
Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
Re: radio install ??

Quote:
Originally Posted by rodstored-72 View Post
john,
thanks for the reply. i noticed that on my panel too & so do i understand right that i just run a red "power" wire from the new radio to the "blade" connection onto that connection at the fuse panel?

thanks!!
Correct.
john is offline   Reply With Quote
Old 05-20-2009, 06:03 PM   #6
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 2,003
Re: radio install ??

when doing that will that mean that the radio will be on "all" the time or is that "key-on" connection?

thanks again!!
rodstored-72 is offline   Reply With Quote
Old 05-20-2009, 07:38 PM   #7
JimKshortstep4x4
Senior Member
 
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
Re: radio install ??

The radio will work with the ignition
switch either "on" or accessory.

Jim
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end
1965 Impala SS 400 sbc, Muncie rock crusher
1966 Impala SS 396 bbc, TH 400
1969 El Camino, 350 sbc, TH 350
1971 Snowplow built on a Blazer frame
1972 GMC Short bed, stepside, TH 400, 427 BBC
JimKshortstep4x4 is offline   Reply With Quote
Old 05-21-2009, 09:51 AM   #8
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 2,003
Re: radio install ??

all,
thanks for the insight & answers! i am going to try & hook it up this weekend. i will let you all find out if i blow the truck up or not!!!(lol!)

thanks again for the replies!!

p.s. just out of curiosity is there a separate radio harness for these trucks since the radio was a option? and also is what is described in the previous posts the "factory" way the radios were connected??

thanks again!!
rodstored-72
rodstored-72 is offline   Reply With Quote
Old 05-21-2009, 08:48 PM   #9
red71c10
The Red Menace
 
red71c10's Avatar
 
Join Date: Feb 2009
Location: Roseburg, OR
Posts: 577
Re: radio install ??

Quote:
Originally Posted by rodstored-72 View Post
all,
thanks for the insight & answers! i am going to try & hook it up this weekend. i will let you all find out if i blow the truck up or not!!!(lol!)

thanks again for the replies!!

p.s. just out of curiosity is there a separate radio harness for these trucks since the radio was a option? and also is what is described in the previous posts the "factory" way the radios were connected??

thanks again!!
rodstored-72
Here's a factory speaker with the attached wiring harness. This one is missing a plug on one end of the power wire. The big black plug goes into the back of the radio, the power wire goes from the fuse panel into the big black plug. When you get the radio/speaker all in place and attached with the brackets, that grounds it. Plug in the antenna and you're ready to go!
Attached Images
 
__________________
1971 Custom 10 - 350/350TH - Pwr steering, gauges, Chrome front bumper, Chrome hubcaps, Door edge guards, HD rear springs (current)
1968 C-20 Custom Camper - 350/350TH (orig 327), Pwr steering & brakes, gauges w/tach (former)
1968 C-20 - 307/3sp column (Dad's when I was a kid)

"Driving is like coloring. Things get messy if you can't stay inside the lines."
red71c10 is offline   Reply With Quote
Old 05-21-2009, 10:10 PM   #10
lolife99
67-72 parts collector,…
 
lolife99's Avatar
 
Join Date: Nov 2002
Location: Mid-MO
Posts: 22,700
Re: radio install ??

Good info here.
__________________
Keith

Convert to disc brakes.
http://67-72chevytrucks.com/vboard/s...d.php?t=444823
lolife99 is offline   Reply With Quote
Old 05-21-2009, 11:59 PM   #11
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 2,003
Re: radio install ??

thanks guys for all the effort & time!! i agree it is good info on here (as always) i know that when a question is asked on here there will always be a answer & added info as well.....

thanks again guys!!
rodstored-72
rodstored-72 is offline   Reply With Quote
Old 05-22-2009, 08:25 AM   #12
72BlckButy
Tot Roddin'
 
72BlckButy's Avatar
 
Join Date: Apr 2005
Location: Mid-MO
Posts: 24,461
Re: radio install ??

This is an information thread, great post guys!

Subscribed...
__________________
-Nate

1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6)
1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior)
2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)

Last edited by 72BlckButy; 05-22-2009 at 08:25 AM.
72BlckButy is offline   Reply With Quote
Old 05-22-2009, 09:25 AM   #13
maddog1331
Registered User
 
maddog1331's Avatar
 
Join Date: Feb 2009
Location: Somerset, KY
Posts: 398
Re: radio install ??

I don't know what radio you are putting in, but it would be a good idea to make sure a fuse holder is on the power wire. Just in case something isn't hooked up right, it will keep you from frying the radio. If it is a used radio it might not have one. You can pick one up at radio shack and probably Wal Mart.
Attached Images
 
maddog1331 is offline   Reply With Quote
Old 05-22-2009, 10:02 AM   #14
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 2,003
Re: radio install ??

MADDOG1331,
Thanks for the info. i will probably do that although the radio has a fuse in the back of it. i also wonder since it will be connected to the actual fuse block (plugged in) wont it have a "regulated" or pre-set amount of current flowing??
....as you can tell i know very little about electricity...lol

thanks for the input....
rodstored-72 is offline   Reply With Quote
Old 05-22-2009, 10:25 AM   #15
maddog1331
Registered User
 
maddog1331's Avatar
 
Join Date: Feb 2009
Location: Somerset, KY
Posts: 398
Re: radio install ??

Hey glad to help

I always put a fuse holder on the power wire even if there is a fuse in the back of the radio. Just a little extra insurance

As for the amount of current, I am not 100% sure of your question, but this may help:

If the place you hook up the line to on the fuse box has current only when the ignition is on, you'll only have power when the ignition is on.

If the hookup always has power, you'll be getting power all the time no matter if the ignition is on or not. I ran many batteries down by doing that and forgetting to turn off the radio when I left the vehicle

If you mean like amount of electricity, you don't have to worry about it being regulated. I expect that this might fluctuate on a vehicle's electrical system, but not much. I have never had any problems with surging or anything.

Question...does this new radio have multiple power wires? One might be yellow. If it does, you probably have a radio that saves your preset stations, has a clock, etc. If it does, you'll want to run that yellow wire (could be orange also, I think...) to part of the fusebox that always has power (and use a fuse holder on this also).

One thing that has been VERY handy for me is an automotive circuit tester. You hook up the alligator clip to a grounded surface (some place on the body generally...may have to try different areas to get a good ground), and put the point on the place you want power from. It seems like every fuse box I have ever dealt with had the letters telling you what that fuse did worn off. It really helped me.

If you are unsure if something has power all the time, or only with the igniation, use one of these testers and switch the ignition on and off. It will light up when power goes through it. A picture of one is below

Sorry for being so long winded, or if I have went over stuff you already know. I just know how it was when I first started hooking up stuff, any information was helpful!
Attached Images
 
maddog1331 is offline   Reply With Quote
Old 05-23-2009, 10:47 AM   #16
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 2,003
Re: radio install ??

maddog1331, not winded at all i appreciate the time. here is the wiring per directions. ohh you did answer my question(s)!...

blk = ground
blu = antenna
red = 12v pwr (acc)
yllw = 12v pwr (all times)

sooo if i understand right...:
red = to fuse "blade" on panel (like in picture)

yellow = to a wire that is only "live" when the acc. is turned on (??) (does anyone know where or what wire might work????

black = to cab ground

a new question for you guys..... i have a blue (w/ white stripe) wire that is labeled ""amp rem"" i assume that it goes to the amplifier, but i wonder what it is for???

thanks again!!!
rodstored-72 is offline   Reply With Quote
Old 05-23-2009, 01:09 PM   #17
moon
Registered User
 
moon's Avatar
 
Join Date: Nov 2007
Location: Los Angeles, CA
Posts: 84
Re: radio install ??

Quote:
Originally Posted by rodstored-72 View Post
i have a blue (w/ white stripe) wire that is labeled ""amp rem"" i assume that it goes to the amplifier, but i wonder what it is for???

thanks again!!!
Thats a 12 volt line that when connected to your amp., turns it on & off from the head unit. The amp will also need a hot line connected direct to the battery, using a larger gauge wire ... (4-10 depending on your amp).
__________________
1970 CST long bed Fleetside
moon is offline   Reply With Quote
Old 05-23-2009, 01:22 PM   #18
red71c10
The Red Menace
 
red71c10's Avatar
 
Join Date: Feb 2009
Location: Roseburg, OR
Posts: 577
Re: radio install ??

Quote:
Originally Posted by rodstored-72 View Post
maddog1331, not winded at all i appreciate the time. here is the wiring per directions. ohh you did answer my question(s)!...

blk = ground
blu = antenna
red = 12v pwr (acc)
yllw = 12v pwr (all times)

sooo if i understand right...:
red = to fuse "blade" on panel (like in picture)

yellow = to a wire that is only "live" when the acc. is turned on (??) (does anyone know where or what wire might work????

black = to cab ground

a new question for you guys..... i have a blue (w/ white stripe) wire that is labeled ""amp rem"" i assume that it goes to the amplifier, but i wonder what it is for???

thanks again!!!
Red would go to the fuse panel "Radio" connection. Yellow should be full time power since it's there to power the memory for the clock and station presets. I'm thinking the lighter ("CIG") connection is your best bet for full time power. The black ground wire can be redundant depending on how you install the stereo, but it never hurts.
__________________
1971 Custom 10 - 350/350TH - Pwr steering, gauges, Chrome front bumper, Chrome hubcaps, Door edge guards, HD rear springs (current)
1968 C-20 Custom Camper - 350/350TH (orig 327), Pwr steering & brakes, gauges w/tach (former)
1968 C-20 - 307/3sp column (Dad's when I was a kid)

"Driving is like coloring. Things get messy if you can't stay inside the lines."
red71c10 is offline   Reply With Quote
Old 05-23-2009, 09:04 PM   #19
mvfd70
Registered User
 
mvfd70's Avatar
 
Join Date: Jan 2007
Location: Opdyke, IL
Posts: 775
Re: radio install ??

Quote:
Originally Posted by rodstored-72 View Post
blk = ground
blu = antenna
red = 12v pwr (acc)
yllw = 12v pwr (all times)

sooo if i understand right...:
red = to fuse "blade" on panel (like in picture)

yellow = to a wire that is only "live" when the acc. is turned on (??) (does anyone know where or what wire might work????

black = to cab ground

Close. red to switched power. "Live" when key is on. yellow to "live" all the time.
__________________
1978 Chevrolet Silverado 3/4 ton 400 small block.
2000 F-250 Powerstroke
2002 GMC Yukon Denali XL
mvfd70 is offline   Reply With Quote
Old 05-24-2009, 10:22 AM   #20
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 2,003
Re: radio install ??

guys,
thanks for the replies!!! it is sooo cool to have people to "go to" & get real answers.... unlike the "local" auto parts store (lol!). i had noticed that i kinda cross the red wire & the yellow wire after i posted. thanks for the clarification.
moon,thanks for the answer i will hook it up accordingly.
red71c10, thanks as well for the clarification i will do as suggested & hook up the yellow wire to cig. connection.

i am not running a wiper motor & the factory cig. lighter is not connected either. are there any suggestions on what of those wires can be used for in relation to the radio power wires???. & a amplifier connection??

thanks!!
rodstored-72 is offline   Reply With Quote
Old 05-25-2009, 09:16 AM   #21
maddog1331
Registered User
 
maddog1331's Avatar
 
Join Date: Feb 2009
Location: Somerset, KY
Posts: 398
Re: radio install ??

Quote:
Originally Posted by rodstored-72 View Post
guys,
thanks for the replies!!! it is sooo cool to have people to "go to" & get real answers.... unlike the "local" auto parts store (lol!). i had noticed that i kinda cross the red wire & the yellow wire after i posted. thanks for the clarification.
moon,thanks for the answer i will hook it up accordingly.
red71c10, thanks as well for the clarification i will do as suggested & hook up the yellow wire to cig. connection.

i am not running a wiper motor & the factory cig. lighter is not connected either. are there any suggestions on what of those wires can be used for in relation to the radio power wires???. & a amplifier connection??

thanks!!
Hey man, hope it is coming along well . And hey it is good to hear you asking so many questions, it is much better to be safe than sorry. I think this install will go well for you!

Here are a few things:

Amp Rem wire - you don't need to hook that up. It stands for Amplifier Remote or some such. It is used when someone has an external amplifier along with the stereo. All that wire does is send a signal to the amplifier to tell it to turn on, and you have only mentioned the radio, not an external amp so don't do anything with it.

As for the 'always on' power, I think the lighter one would be fine. If you have a circuit tester you can just test different things on the fuse box and see what is always on and tap into it. The Yellow wire draws very little current, so I think no matter what wire you end up hooking up to it shouldn't hurt anything.

If you get frustrated and can't find a wire that has constant power, you can hook both the red and yellow wires together and run them from the same power source. Of course, you won't have the memory functions and clock working right on the radio, but it should work ok otherwise.

Keep us posted on how it is going man!
maddog1331 is offline   Reply With Quote
Old 05-26-2009, 10:10 AM   #22
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 2,003
Re: radio install ??

well guys i thought that i would have it all connected by now (being a holiday weekend), but as we all know life gets in the way sometimes...lol!! anyways i plan on hooking things up this week if not on friday. thank you all for the great responses. i am excited about doing this, it is my first attempt at wiring a radio or anything like this. i feel very confident about though thanks to all the great help from here.... i will try to post pics so you guys can see that your efforts weren't in vain..lol!!

thanks again for all the responses & help!!
rodstored-72 is offline   Reply With Quote
Old 05-26-2009, 02:43 PM   #23
maddog1331
Registered User
 
maddog1331's Avatar
 
Join Date: Feb 2009
Location: Somerset, KY
Posts: 398
Re: radio install ??

Glad to help man, good luck with it!
maddog1331 is offline   Reply With Quote
Old 05-26-2009, 07:06 PM   #24
red71c10
The Red Menace
 
red71c10's Avatar
 
Join Date: Feb 2009
Location: Roseburg, OR
Posts: 577
Re: radio install ??

Quote:
Originally Posted by rodstored-72 View Post
well guys i thought that i would have it all connected by now (being a holiday weekend), but as we all know life gets in the way sometimes...lol!! anyways i plan on hooking things up this week if not on friday. thank you all for the great responses. i am excited about doing this, it is my first attempt at wiring a radio or anything like this. i feel very confident about though thanks to all the great help from here.... i will try to post pics so you guys can see that your efforts weren't in vain..lol!!

thanks again for all the responses & help!!
Easy Peasie Lemon Squeezie!!! You'll do fine!
__________________
1971 Custom 10 - 350/350TH - Pwr steering, gauges, Chrome front bumper, Chrome hubcaps, Door edge guards, HD rear springs (current)
1968 C-20 Custom Camper - 350/350TH (orig 327), Pwr steering & brakes, gauges w/tach (former)
1968 C-20 - 307/3sp column (Dad's when I was a kid)

"Driving is like coloring. Things get messy if you can't stay inside the lines."
red71c10 is offline   Reply With Quote
Old 06-07-2009, 01:44 AM   #25
72BlckButy
Tot Roddin'
 
72BlckButy's Avatar
 
Join Date: Apr 2005
Location: Mid-MO
Posts: 24,461
Re: radio install ??

Okay guys.... I need to bring this back to the top.

This morning I installed a new radio in my truck, but for some reason my radio terminal is dead. Does anyone have any ideas as to why this might be? This will be a dumb question, but is there a fuse to this terminal? Still learning guys..

What other terminals can I tap into to be able to use the accessory switch on the ignition?

Name:  fusebox.jpg
Views: 9069
Size:  67.5 KB
__________________
-Nate

1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6)
1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior)
2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)
72BlckButy is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:28 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com