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#26 |
Registered User
Join Date: May 2007
Location: Southern, Saskatchewan
Posts: 640
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Re: AUX input jack for 67-72 AM radio
Radio comes on as soon as you unplug it, and I did mine in 1 1/2 hours, i found it was a very easy job!!
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Kerry My build thread. http://67-72chevytrucks.com/vboard/s....php?p=3657823 1971 Chev SWB with 68 nose, 6.2 diesel th350, and 3.73 rear gears 1988 Chev Extendacab 2010 Honda VT1300CS Sabre 2005 Buick Rendezvous wife's ride |
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#27 |
Registered User
![]() Join Date: May 2011
Location: Long Island NY
Posts: 787
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Re: AUX input jack for 67-72 AM radio
Im glad so many are interested in this mod. With all the great help I recieved here, I feel I gave a little back!
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#28 |
Hand Crafted C-10
![]() Join Date: Aug 2006
Location: Burien, WA
Posts: 5,180
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Re: AUX input jack for 67-72 AM radio
Will this same concept work for a USB port?
and you are correct...I'm not normally allowed near electronics... ![]() |
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#29 | |
Registered User
Join Date: Aug 2010
Location: RTP, NC
Posts: 518
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Re: AUX input jack for 67-72 AM radio
Quote:
The AUX jack is just an analog +/- connection.
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![]() ![]() 71 C-10 - 307 - 3 on tree 01 Ford Explorer 5.0 v8 96 Mercury Cougar v8 79 Trans Am 403 Olds |
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#30 |
Registered User
Join Date: Dec 2012
Location: Pascoag, RI
Posts: 33
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Re: AUX input jack for 67-72 AM radio
Very nice!
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'68 GMC C1500 (CS10) LWB Wideside. Restoring a '69 Camaro, (also have an '06 Mustang.) |
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#31 |
Registered User
Join Date: Dec 2012
Location: Pascoag, RI
Posts: 33
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Re: AUX input jack for 67-72 AM radio
Did my mod and thought that I'd mention a few things.
- The directions were very well done. - The resistors allow you to connect both stereo channels to one mono channel without risking damage to the MP3 player. The recommended 2K value can be different, but too large will attenuate the signal and lower the volume. The package size of the resistors doesn't matter as there is very little current. 1/4 watt are easy to work with. They could be incorporated into the wiring if you use larger resistors with leads that are too big to fit into the small terminals on the connector. - There is no way to drive two speakers in stereo with this mod as the radio is mono and only has one amplifier channel. - Someone asked about a 3pin connector. the 5 pin includes a switch that allows you to use am radio or aux input. If you use a 3pin connector, you would have to disconnect the am radio. Simply wire the audio pins of the connector to the blue wire. The resistors should still be used. - The mod MAY work with a non-working radio. it depends upon what is wrong with the radio - meaning the tuning circuit or the amplifier. If you here static but can not receive stations, the mod should work. If I think of anything else, I'll update this post. Thanks again for the detailed instructions. Posted via Mobile Device
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'68 GMC C1500 (CS10) LWB Wideside. Restoring a '69 Camaro, (also have an '06 Mustang.) Last edited by chuck69ss; 03-16-2013 at 09:45 AM. |
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#32 |
Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,559
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Re: AUX input jack for 67-72 AM radio
subscribed! Now to find a radio...
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70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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#33 |
MOVE OVER
Join Date: Jun 2002
Location: Warrensburg, MO
Posts: 5,470
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Re: AUX input jack for 67-72 AM radio
nice.. I need to do this.
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No matter where you are..... There you are... Buckaroo Banzi |
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#34 |
Registered User
Join Date: Aug 2010
Location: Des Moines, IA
Posts: 1,241
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Re: AUX input jack for 67-72 AM radio
Also subscribed for future use. Great write up!
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Bud |
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#35 |
wanna be 67
Join Date: May 2007
Location: Nor Cal
Posts: 696
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Re: AUX input jack for 67-72 AM radio
Just did this mod. So happy I did. Only thing I did different was I cut the blue wire in half and soldered the other wires to them, rather than resoldering to circuit board. Thank you for this write up.
Posted via Mobile Device |
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#36 |
Registered User
Join Date: Nov 2011
Location: Sheffield, ALA
Posts: 2,471
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Re: AUX input jack for 67-72 AM radio
Just finished the mod on my radio.
If I can do it, any body can. haha Now can this be done on an 80's model am-fm cass. radio for a 86. |
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#37 |
Registered User
![]() Join Date: Nov 2012
Location: BY THE CAROLINA SEA
Posts: 919
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Re: AUX input jack for 67-72 AM radio
So can this be done with an AC Delco radio with stereo capability or no? My 1981 C10 has an AM/FM AC Delco that supposedly came out of a Corvette that fits perfectly into the factory slot. My 68 c10 has an LMC type retro-fit radio that I might want to try also.
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FRANKENTRUCK 1981 Chevrolet C10 Shortbed Stepside GRANDTRUCK 1968 Chevrolet C10 Stepside Longbed http://67-72chevytrucks.com/vboard/s...d.php?t=584617 PROJECT JIGSAW 1967 GMC C3500 GREAT WHITE 1986 Blazer M1009 |
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#38 |
The Red Menace
Join Date: Feb 2009
Location: Roseburg, OR
Posts: 577
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Re: AUX input jack for 67-72 AM radio
Finally got around to doing this today. Works pretty good, but the little Radio Shack jack doesn't seem to grab onto the plug very tightly and it can be a little touchy. Once I get it plugged in well, it sounds fine. I does prove that my 43 year old speaker 'aint what it used to be. If I go into the EQ settings on my iPhone and use the Bass Reducer it helps a lot and I'm able to get more volume without it breaking up. The area where I'm currently living has no music stations on AM so this is a great thing to have when I'm out running errands in my truck!
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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." |
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#39 |
Registered User
Join Date: Nov 2011
Location: Kirkland, WA
Posts: 343
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Re: AUX input jack for 67-72 AM radio
This is a very cool mod and should go into the cheap mod thread. Total cost $4.38 plus tax at Radio Shack! I made the mistake of drilling my hole a little far over then had to use a rotary tool to take away some material to get my 3.5 mm (1/8") receptacle inserted. Also, my soldering gun tip was loose which explained why it wouldn't get hot! Once I got that fixed and I plugged my phone into the jack, it worked great! I am amazed that even I could do it! Geezus my radio was filthy inside, so it took longer to clean it all up than it did to do the soldering! BTW, I used liquid electrical tape to protect all exposed areas.
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#40 |
The Red Menace
Join Date: Feb 2009
Location: Roseburg, OR
Posts: 577
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Re: AUX input jack for 67-72 AM radio
Did anyone else's radio die after doing this mod? I'm sure I installed it correctly and it did work fine for awhile, but now my radio is stone dead. The radio started making interference noise, then it worked intermittently (but not well) and then died. I have an extra AM radio I'll dig up and put in my truck, but I think I'll leave well enough alone and won't do this mod again.
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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." |
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#41 | |
Registered User
Join Date: Dec 2011
Location: Earth, NJ
Posts: 479
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Re: AUX input jack for 67-72 AM radio
Quote:
It could be something simple too, if you did the mod yourself, open it up and check it out for something obvious |
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#42 |
Registered User
Join Date: May 2008
Location: 204
Posts: 903
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Re: AUX input jack for 67-72 AM radio
Any thoughts on an Am/fm? The blue wire from the pot on the am/fm goes to a capacitor soldered on the side of the case. The other wire from the pot which is black goes to the circuit board
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1969 Chevy Custom Camper 3/4 ton Rust free survivor 1972 Chevy Blazer CST 4x4 Almost Rust free survivor 1972 GMC Jimmy 2wd Undergoing surgery |
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#43 |
Registered User
Join Date: May 2008
Location: 204
Posts: 903
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Re: AUX input jack for 67-72 AM radio
Here is a shot of the wires coming from the pot
__________________
1969 Chevy Custom Camper 3/4 ton Rust free survivor 1972 Chevy Blazer CST 4x4 Almost Rust free survivor 1972 GMC Jimmy 2wd Undergoing surgery |
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#44 |
Registered User
Join Date: Dec 2012
Location: Pascoag, RI
Posts: 33
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Re: AUX input jack for 67-72 AM radio
Couple of thoughts:
1. A cap soldered to the case sounds like a tone control, rather than volume. These are stacked pots, right? 2. The easiest way to figure this out is with an oscilloscope. I have also used a set of headphones with one side tied to gnd and uses the signal lead to poke around and follow the signal path. You want to find the input side of the volume control. 3. I wish that had an AM/FM to figure this out. :-) Maybe someone else has figured this out.
__________________
'68 GMC C1500 (CS10) LWB Wideside. Restoring a '69 Camaro, (also have an '06 Mustang.) |
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#45 | |
Registered User
Join Date: May 2008
Location: 204
Posts: 903
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Re: AUX input jack for 67-72 AM radio
Quote:
Thanks for the insight. Not quite sure what the significance stacked pots have but it does look like there is two of them kind of. I will try the headphone idea and report back.
__________________
1969 Chevy Custom Camper 3/4 ton Rust free survivor 1972 Chevy Blazer CST 4x4 Almost Rust free survivor 1972 GMC Jimmy 2wd Undergoing surgery |
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#46 |
Registered User
Join Date: Jun 2004
Location: El Lago, TX
Posts: 1,668
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Re: AUX input jack for 67-72 AM radio
I just bought a neat device that adds Bluetooth to an aux input. It works great with no loss in sound quality. I leave mine plugged in all the time and never have to touch it. I bought this because I listen to music through my iphone. The phone has a water proof case and it was a pain to plug into the aux jack.
Seems like you guys adding the plug to the stock radio could add one to the back of the radio somewhere. Then you could hide the Bluetooth adapter and your system would be completely wireless. People would be wondering what AM radio station you are listening to with all the cool music and no commercials. ![]() Here's a link to the one I bought. ![]() |
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#47 |
Registered User
Join Date: May 2008
Location: 204
Posts: 903
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Re: AUX input jack for 67-72 AM radio
My plan is to add Bluetooth. I bought one of these http://www.ebay.com/itm/141283435836?redirect=mobile and one of these to power it http://www.ebay.com/itm/UN3F-Car-Cha...item43bdb9b07c
I will be able to tuck all this up under the dash to have an invisible Bluetooth system. I already did the aux mod to an am radio and have the cord coming about of the dash is a bit of a pain so the Bluetooth should clean things up nicely.
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1969 Chevy Custom Camper 3/4 ton Rust free survivor 1972 Chevy Blazer CST 4x4 Almost Rust free survivor 1972 GMC Jimmy 2wd Undergoing surgery |
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#48 |
Registered User
Join Date: Jun 2010
Location: San Diego Co.
Posts: 1,162
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Re: AUX input jack for 67-72 AM radio
subscribed.
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1972 Chevy C-10, SWB, Fleet, 350/350, PS, PB, HEI, mostly stock, Survivor. ![]() |
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#49 |
Registered User
Join Date: Apr 2014
Location: Quebec
Posts: 17
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Re: AUX input jack for 67-72 AM radio
Will it work with a broken radio ?
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#50 |
Registered User
Join Date: Nov 2011
Location: Kirkland, WA
Posts: 343
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Re: AUX input jack for 67-72 AM radio
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