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10-21-2004, 06:05 PM
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#1 |
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Post Whore
 
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,686
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Engine wiring harness identification help needed
Well, my old harness has been out for a real long time and I am trying to figure out with the help of my manuals where each wire goes.
Here are the pics of both parts of the engine harness. One harness is set up for a new style 1 wire alternator.   I believe the wires go to these things: 1 ground 2 ground 3 horn 4 headlights 5 front turn or side marker 6 front turn or side marker 7 alternator plug 8 also for the alternator alternator ? 9 ground maybe 10 junction block on fender 11 junction block on fender 12 front turn or side marker 12a front turn or side marker 13 headlights 14 ground 15 distributor 16 appears to be for the oil pressure idiot light 17 starter posts 18 transmission - back up lights 19 temp sending unit 20 master brake cylinder 21 appears to be for the TSC Other than the ones that I don't know, does it look like I have it figured out? Thanks for any help.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 Last edited by Yukon Jack; 06-24-2010 at 11:20 AM. |
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10-21-2004, 08:16 PM
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#2 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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It looks like you pretty well have it figured out. Here is what the other terminals look like to me: 7) Alternator plug
16) Oil pressure light sender 21) Wiring for TSC Jim |
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10-21-2004, 10:10 PM
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#3 |
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Post Whore
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,686
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I don't think my 69 uses the TSC so I guess I ignore that.
For 16, I guess you mean that in addition to the mechanical oil pressure gauge there should be a light on the dash for loss of oil pressure?
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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10-21-2004, 10:18 PM
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#4 |
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Life is Good !
Join Date: Mar 2002
Location: Hollister, Ca.
Posts: 1,992
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The idiot light
 I think is what he is talking about 
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'72 Chevy C10 4x4 shortbed "Project" '71 Chevy C10 2wd longbed "partsrunner" '91 Chevy Burb 4x4 "kidrunner" '14 Honda Accord Sport "commuter" |
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10-21-2004, 10:42 PM
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#5 |
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Post Whore
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,686
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It's funny, it was a bit overwhelming when I was looking at the stuff last night but this morning when I took it with me to work to photograph it, it didn't seem that bad. Won't be getting to get it installed tonight, maybe some free time in the next few days.
I wasn't planning on having an idiot light for the oil - I keep a good eye on the oil pressure gauge, hope that isn't a mistake not to have an idiot light in addition to the oil pressure gauge. Got the gauges wired up a few nights ago. I did have to move the speedo to the other side, forgot about how the speedo cable is routed. 
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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10-21-2004, 11:20 PM
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#6 |
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Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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I used the # 21 for a underhood light.(just turn ing. switch to ass.)
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56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer |
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10-21-2004, 11:49 PM
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#7 |
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someday it will be done!
Join Date: Sep 2004
Location: Lloydminster,AB. Canada
Posts: 1,620
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man those guages look good!What brand are they?
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'72 C-10 Proud owner of a million new and used pieces that used to be and will once again be(god willing) a testament to the term "they don't build em like that anymore.    '80 LWB 2wd beater '67 GMC long fleet (cab donor) '66 long step (parked till it's turn comes around) '65 short step (parts truck that will donate it's bed and possibly frame to the '66) '06 Grand Prix wife's car (she hardly lets me touch it) my pics |
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10-22-2004, 08:30 AM
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#8 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Yukon,
That is a good way to look at wiring harnesses. Your pics are very good and numbering the ends breaks it down so that the harness is understandable. Jim |
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10-22-2004, 09:26 AM
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#9 |
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Post Whore
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,686
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Assuming things are correctly identified maybe the pic and identification should go into the FAQ.
Rollie396 - the gauges are AutoMeter's Phantom series. I'm really liking how they look with the silver interior and black dash pad and bezel.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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10-22-2004, 07:15 PM
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#10 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Yukon,
Putting the pics and description into the FAQ's would be a good thing to do. Questions on harnesses come up all of the time and it is easier to understand than a schematic. Jim |
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10-22-2004, 07:21 PM
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#11 |
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Shortbox wanna-be.
Join Date: Mar 2002
Location: Fort St.John, British Columbia, Canada
Posts: 773
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Good Post!
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1970 Chevy C20 Custom Camper 402BB Turbo 400 trans. (Slowly becoming a '70 shortbox 1/2 ton) '71 Camaro SS 402/T400 resto '97 Z28 (11.41@127MPH) 
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