How Do The Turn Signals Work?????? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Paradise Ridge · 09-09-2004, 09:03 PM

Howdy all,

'82 K30 W/ 454, Flatbed with duals.

OK. I'm trying to wire up new trailer wiring jacks, but I'm stumped!

Followed the buggered up harness back to what I believe is the stock harness, which has a 4-way plug. 4 wide spade leads, 2 vertical and 2 horizontal.

To make a long story (and 2 hours work) short, how do I wire into the the turn signals?

If I touch the tester to one vert lead with 1 turn signal on, I have to touch one horiz. term to the vert. term to even make the signal flash. one vert term glows brightly when grounded (no flash) and the other vert term glows dull.

I'm used to the Yellow-green-white-red type wiring. Am I passing the dumbsh1t test or what?

Thanks!

Scott

NeCrOmAnCeR · 09-10-2004, 06:09 PM

Your signals are not flashing because withthe rear disconnected there is not enuf current through the flasher to cause it to flash. The colors are as follows for a stock harnes.
Yellow - Left turn
Green - Right turn
Brown - Tail lamps (running lights)
grounds are through the chassis.

Grim Reaper · 09-11-2004, 01:21 AM

Yep. Most trailer hitch places have a plug and play adaptor for about $12 that lets you hook up without having to cut the factory wires.

1987SierraClassic · 09-22-2004, 04:27 AM

I'd get a solid state/heavy duty flasher while you're at it, they aren't dependent on current flow. A normal flasher will flash too fast with a trailer connected for the same reason Necromancer speaks of...current flow (more lights, more current, less lights less current) The HD flashers tend to 'click' louder than the normal ones too.
I use the adapter that Grim Reaper speaks of on my '87. I pop it in when I need it, otherwise it lives in the glove box. (Stays nice and clean that way!)

That's my 2 cents.

09-09-2004, 09:03 PM	#1
Paradise Ridge Registered User Join Date: Mar 2004 Location: Beautiful North Idaho Posts: 33	How Do The Turn Signals Work?????? Howdy all, '82 K30 W/ 454, Flatbed with duals. OK. I'm trying to wire up new trailer wiring jacks, but I'm stumped! Followed the buggered up harness back to what I believe is the stock harness, which has a 4-way plug. 4 wide spade leads, 2 vertical and 2 horizontal. To make a long story (and 2 hours work) short, how do I wire into the the turn signals? If I touch the tester to one vert lead with 1 turn signal on, I have to touch one horiz. term to the vert. term to even make the signal flash. one vert term glows brightly when grounded (no flash) and the other vert term glows dull. I'm used to the Yellow-green-white-red type wiring. Am I passing the dumbsh1t test or what? Thanks! Scott

09-11-2004, 01:21 AM	#3
Grim Reaper Registered User Join Date: Jul 2001 Location: Atlanta GA Posts: 1,704	Yep. Most trailer hitch places have a plug and play adaptor for about $12 that lets you hook up without having to cut the factory wires. __________________ Grim-Reaper 70 Pontiac LeMans Sport Convertible, worlds longest resto in progress Looking for 71-72 2wd Blazer or Jimmy Project

09-10-2004, 06:09 PM	#2
NeCrOmAnCeR Registered User Join Date: Feb 2004 Location: Hodgenville, Ky Posts: 735	Your signals are not flashing because withthe rear disconnected there is not enuf current through the flasher to cause it to flash. The colors are as follows for a stock harnes. Yellow - Left turn Green - Right turn Brown - Tail lamps (running lights) grounds are through the chassis.

09-22-2004, 04:27 AM	#4
1987SierraClassic Registered User Join Date: Sep 2004 Location: Buxton, ME Posts: 91	I'd get a solid state/heavy duty flasher while you're at it, they aren't dependent on current flow. A normal flasher will flash too fast with a trailer connected for the same reason Necromancer speaks of...current flow (more lights, more current, less lights less current) The HD flashers tend to 'click' louder than the normal ones too. I use the adapter that Grim Reaper speaks of on my '87. I pop it in when I need it, otherwise it lives in the glove box. (Stays nice and clean that way!) That's my 2 cents.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.