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 02-23-2014, 01:35 AM   #1
First c10
Registered User
 
First c10's Avatar
 
Join Date: Dec 2012
Location: Los Banos CA
Posts: 2,705
New wiring harness question

Hello guys I have a few questions. For the first time tonight I put power to my new wiring harness. The first thing that came on was the windshield wipers so I switched them off and them started thinking since the key switch was off how come they can on? I can't remember but I don't think the wipers should work with key off. Is that correct? The hardness even has power for door locks and window which all have power with the key off. I can see the door lock power by window too?

It's a new painless harness. Thanks in advance.
Scott
__________________
1956 Chevy Bel Air 2 door
1956 Chevy 210 4 Door
1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD
1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E
1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD*
GO GO!!!
First c10 is offline   Reply With Quote
Old 02-23-2014, 11:11 AM   #2
First c10
Registered User
 
First c10's Avatar
 
Join Date: Dec 2012
Location: Los Banos CA
Posts: 2,705
Re: New wiring harness question

Anyone?
__________________
1956 Chevy Bel Air 2 door
1956 Chevy 210 4 Door
1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD
1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E
1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD*
GO GO!!!
First c10 is offline   Reply With Quote
Old 02-23-2014, 11:21 AM   #3
desertnick69
Senior Member
 
desertnick69's Avatar
 
Join Date: Jan 2012
Location: Phoenix, Arizona
Posts: 498
Re: New wiring harness question

They don't work with trhe key off in my truck.
desertnick69 is offline   Reply With Quote
Old 02-23-2014, 11:21 AM   #4
colgad
Registered User
 
colgad's Avatar
 
Join Date: Jun 2006
Location: Lutz, Florida
Posts: 838
Re: New wiring harness question

I would check the ign switch wiring first.

A question: Do other things like the radio or the heater fan run with the switch in the off positition?

Then there might be a 12v batt circuit back feeding the run circuit

Start removing fuses (leaving the wiper one in) to see if you can get the issue to stop.

If you remove one and it quits working with the ign off. You can then trace back on that circuit to see if you have something miss wired like a relay wired Normally closed when it should be wired normally open.

Or somewhere in that circuit you (can't believe this would happen) connected a wire in the wrong place. :-)

Let us know what you find or don't find.
__________________
1967 Red, C10 Short Bed 6.0L T5 5 speed
1967 Orange and Black C50 6.2 Detroit Diesel NV4500, 2 Ton Pickup
1972 White, Chevy Blazer 2WD 67 Dog house 5.3 4L65 2016 Power Tour LH
1955 Red-Cream, Chevrolet Nomad, restoration on hold
2004 Black, Corvette Z06 LS6 convertible (Rock solid Fun) 2011/2018 Power Tour
colgad is offline   Reply With Quote
Old 02-23-2014, 11:38 AM   #5
First c10
Registered User
 
First c10's Avatar
 
Join Date: Dec 2012
Location: Los Banos CA
Posts: 2,705
Re: New wiring harness question

I didn't think the wipers were supposed to work with the key off. I will check the fuses today as I want to find out what's up. Painless doesn't come with the wiper plug as they say they are not remanufactured. So I removed the old wires and wired in the new ones but I would not think that would change if the power to the wiper motor was switched power or power all the time. I will check the fuses and double check the wires.
Thanks sometimes I just need someone else to confirm what I am thinking.
Thanks
__________________
1956 Chevy Bel Air 2 door
1956 Chevy 210 4 Door
1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD
1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E
1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD*
GO GO!!!
First c10 is offline   Reply With Quote
Old 02-24-2014, 09:29 PM   #6
First c10
Registered User
 
First c10's Avatar
 
Join Date: Dec 2012
Location: Los Banos CA
Posts: 2,705
Re: New wiring harness question

Ok so I put a test light on the wires to the wiper. When I removed the 30am fuse marked coil the light went out. I follows the wires and no short. Do you think it is because I have not completely finished the wiring? Could it be back feeding? I think I am going to have to call painless.
__________________
1956 Chevy Bel Air 2 door
1956 Chevy 210 4 Door
1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD
1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E
1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD*
GO GO!!!
First c10 is offline   Reply With Quote
Old 02-28-2014, 02:02 AM   #7
First c10
Registered User
 
First c10's Avatar
 
Join Date: Dec 2012
Location: Los Banos CA
Posts: 2,705
Re: New wiring harness question

Anyone have a clue? I will be taking the fuse panel appart to see if I can find the short. I even removed the firewall plug and plugged a terminal in the coil lead and my interior lights cam on. I am a little pissed with this. I will be calling painless tommorow.
__________________
1956 Chevy Bel Air 2 door
1956 Chevy 210 4 Door
1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD
1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E
1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD*
GO GO!!!
First c10 is offline   Reply With Quote
Old 02-28-2014, 02:08 AM   #8
cstm68
Registered User
 
cstm68's Avatar
 
Join Date: Jan 2007
Location: shoreline, wa
Posts: 1,565
Re: New wiring harness question

Check that all the wires in the ignition switch plug are in the rite spot. When I did mine I had to switch wires around in the headlight plug to match the headlight switch for any lights to work. You should be able to find a diagram with labels for the ignition switch online or in a factory manual.
__________________
68 swb fleet bagged on 20's 327 with 4 speed http://67-72chevytrucks.com/vboard/s...d.php?t=223308
2014 Chevy 2500hd duramax CCLB
cstm68 is offline   Reply With Quote
Old 03-01-2014, 01:34 AM   #9
First c10
Registered User
 
First c10's Avatar
 
Join Date: Dec 2012
Location: Los Banos CA
Posts: 2,705
Re: New wiring harness question

Well I traced all the wires and found that painless crossed the 2 wires main power and coil wire at the bulk head on assembly. So when I hooked up power to the red wire I was feeding power into the wire that was supposed to supply power to the coils when the key is on. All I had the do was switch the 2 wires at the bulkhead fitting. Works perfectly now.
__________________
1956 Chevy Bel Air 2 door
1956 Chevy 210 4 Door
1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD
1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E
1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD*
GO GO!!!
First c10 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 12:18 AM.


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