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 06-10-2021, 09:44 AM   #1
aggiegrad
Registered User
 
aggiegrad's Avatar
 
Join Date: May 2017
Location: Katy, Tx
Posts: 51
Re: Wiring turn signal question, purple wires

I am pretty sure that you will fix the brake light issue by changing out the turn switch. I was skeptical but the $40 ac Delco switch fixed the problem and seemed high quality. I started to try to clean the old one first but I am glad I just replaced it. the old one was really loose and wearing out through the years. The only issue with the new switch is that it has a newer looking round hazard knob in stead of the old red lever. They also have an adapter that fits the u shape plug as the switch is more universal now.

I will say that the shifter is much smoother as well now as I was able to grease everything while putting it back. I am glad I spent the time. There was a good youtube video that I found that walked me though the process of changing it out.

Let me know if you have any questions. If you are in Pearland you really are not that far from me.

Bryan
aggiegrad is offline   Reply With Quote
Old 06-10-2021, 01:07 PM   #2
Peepaw
Registered User
 
Peepaw's Avatar
 
Join Date: Feb 2013
Location: Pearland, TX
Posts: 137
Re: Wiring turn signal question, purple wires

Quote:
Originally Posted by aggiegrad View Post
I am pretty sure that you will fix the brake light issue by changing out the turn switch. I was skeptical but the $40 ac Delco switch fixed the problem and seemed high quality. I started to try to clean the old one first but I am glad I just replaced it. the old one was really loose and wearing out through the years. The only issue with the new switch is that it has a newer looking round hazard knob in stead of the old red lever. They also have an adapter that fits the u shape plug as the switch is more universal now.

I will say that the shifter is much smoother as well now as I was able to grease everything while putting it back. I am glad I spent the time. There was a good youtube video that I found that walked me though the process of changing it out.

Let me know if you have any questions. If you are in Pearland you really are not that far from me.

Bryan


That is what I am thinking as well. I hope to have the turn signal switch diagnosed properly this evening.
I get off work at 6:00, home by 6:20, have baseball at 7:15 tonight.

So, have @ 15-20 minutes to check signal switch.
If not tonight, definitely tomorrow (and my new switch should be here today/tomorrow as well), but Id like to test old one (now that I have been given info on how to test it) so I can compare notes with new one.

But I have taken every single light/lamp, and gone directly to them and tested them, and they work (correctly wired up).

So we'll see soon enough.
__________________
'72 C10 5.3 SINGLE 76, freight train
Peepaw is offline   Reply With Quote
Old 06-10-2021, 10:52 PM   #3
Peepaw
Registered User
 
Peepaw's Avatar
 
Join Date: Feb 2013
Location: Pearland, TX
Posts: 137
Re: Wiring turn signal question, purple wires

OK, I power probed the green and yellow (and every wire for that matter, AGAIN) wires at the U connector. I am DEFINITELY getting different readings from the two. I shouldve taken video of it. But it's doing something differently when right turn signal is on and brake lights on then it is with left turn on and brakes on.

As luck would have it, my new turn signal switch came in this evening while I was at baseball practice. Sooooooo, I've got work tomorrow and will install new switch after work, OR wait until Saturday morning.

I will keep everyone updated and in the loop. Thanks guys.


Oh, my new Holley Terminator X came in the mail today and so once I get this basic wiring up, I can install the Holley and get this bad girl back on the road.
__________________
'72 C10 5.3 SINGLE 76, freight train

Last edited by Peepaw; 06-11-2021 at 08:24 AM.
Peepaw 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 10:18 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com