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10-22-2014, 07:47 PM
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#1 |
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Registered User
Join Date: Aug 2013
Location: Hiram Ohio
Posts: 619
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Mystery harness...to me anyway
what is this wire harness for? 1972 C10, 2 wheel, 350ci, standard trans. It is not the engine or front light harness, it comes out of the fire wall to the right and slightly above the engine and front harness junction to fuse box. My 1970 C10 does not have this harness..
Thanx in advance...
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1953 Chevy 3100 1964 Chevy Impala 1966 Chevy El Camino 1970 Chevy C10 Fleet Long 1972 Chevy C10 Step long 1985 Chevy K10 Fleet Short |
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10-22-2014, 08:41 PM
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#2 |
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US Army Veteran
 
Join Date: Nov 2008
Location: Central Texas
Posts: 1,049
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Re: Mystery harness...to me anyway
Just look at my '72 and have the same harness coming out of the same location. It runs behind the inside of the driver fender, comes out at the front of the inner fender.
It looks like it would go to the alternator and/or external regulator. The thick red wire probably goes to the alternator and the green wire would most likely go to the temp sending unit.
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1972 C10 Highlander - The making of a daily driver |
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10-22-2014, 09:40 PM
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#3 |
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Registered User
Join Date: Sep 2005
Location: Canton North carolina
Posts: 3,080
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Re: Mystery harness...to me anyway
That is the tcs ( transmission controlled spark ) wiring. If you look there is prob. A relay on pass side and also a round vac. Control located on the intake.
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67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle |
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10-22-2014, 10:08 PM
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#4 | |
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Registered User
Join Date: Aug 2013
Location: Hiram Ohio
Posts: 619
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Re: Mystery harness...to me anyway
Quote:
Thanks...since this build now has a 383, 700r4 etc can this harness be eliminated..? Relay is gone..no vac control on the new Weiand intake...
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1953 Chevy 3100 1964 Chevy Impala 1966 Chevy El Camino 1970 Chevy C10 Fleet Long 1972 Chevy C10 Step long 1985 Chevy K10 Fleet Short |
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10-22-2014, 10:11 PM
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#5 | |
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Registered User
Join Date: Aug 2013
Location: Hiram Ohio
Posts: 619
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Re: Mystery harness...to me anyway
Quote:
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1953 Chevy 3100 1964 Chevy Impala 1966 Chevy El Camino 1970 Chevy C10 Fleet Long 1972 Chevy C10 Step long 1985 Chevy K10 Fleet Short |
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10-23-2014, 12:04 AM
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#6 |
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Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,507
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Re: Mystery harness...to me anyway
The flip side of the picture.
http://67-72chevytrucks.com/vboard/s...d.php?t=627794
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Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
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10-23-2014, 07:51 PM
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#7 | |
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Registered User
Join Date: Aug 2013
Location: Hiram Ohio
Posts: 619
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Re: Mystery harness...to me anyway
Quote:
Thank you...this is a big help.
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1953 Chevy 3100 1964 Chevy Impala 1966 Chevy El Camino 1970 Chevy C10 Fleet Long 1972 Chevy C10 Step long 1985 Chevy K10 Fleet Short |
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10-24-2014, 10:54 AM
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#8 |
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Registered User
Join Date: Sep 2005
Location: Canton North carolina
Posts: 3,080
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Re: Mystery harness...to me anyway
Yes you can make it all go away.
__________________
67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle |
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