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06-17-2014, 08:17 PM
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#1 |
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Registered User
Join Date: Aug 2012
Location: st. john, in
Posts: 280
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mystery wiring harness.
I am starting to part out a Jimmy I picked up, I bought it for the frame and transmission. Anyway while I was removing all the wiring that looked factory I came across this relay harness that went through the firewall by itself. It was loose in the engine compartment so I am not sure what it is for.it has a thick red wire and 3 smaller wires (brown/white, blue, black/white, on the inside.On the engine side there is a red plug, a single black plug, and the blue wire and brown/white wire go to another plug where there is a green/white wire connected to the blue wire. Anybody know what it is for? I don't have this think on my other blazer or k2o.
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06-17-2014, 08:22 PM
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#2 |
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Registered User
Join Date: Feb 2008
Location: Tacoma Washington
Posts: 890
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Re: mystery wiring harness.
Looks like a horn relay. Was the relay in the cab?
__________________
I know a guy who's addicted to brake fluid. He says he can stop any time. 72 K10 396 75 Cj5 MPI 350 Chev 67 Chevelle 396, 4 speed 74 FXE 08 Tahoe |
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06-17-2014, 08:31 PM
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#3 |
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Registered User
Join Date: Aug 2012
Location: st. john, in
Posts: 280
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Re: mystery wiring harness.
It was in the cab but was mounted above the horn relay. The horn relay was still there plus this.
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06-17-2014, 08:46 PM
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#4 |
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Senior Member
 
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,761
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Re: mystery wiring harness.
Part of the TSC system, spark control off of the trans. for emissions, no need for it
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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06-17-2014, 08:48 PM
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#5 | |
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Registered User
Join Date: Aug 2012
Location: st. john, in
Posts: 280
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Re: mystery wiring harness.
Quote:
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06-22-2014, 10:56 PM
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#6 |
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Registered User
Join Date: Mar 2014
Location: Corvallis, OR
Posts: 715
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Re: mystery wiring harness.
Can confirm it is for tcs system. I just spent about 2 hours looking over wiring diagrams trying to figure out what it is for.
__________________
1972 GMC Jimmy Custom 4.8L (L20)/6L90E/NP205 1989 Chevy Suburban V2500 350/Turbo 400/4.11 gears 1996 Chevy Suburban K1500 350/4L60E |
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