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Old 06-09-2005, 09:43 PM   #1
bagged91
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Underhood wiring differences, V8 Man. vs. V8 Auto?

My 71' Burbs underhood wiring harness is missing(all of it, engine, lights, ect...) It is a 307, 3 spd manual, 2wd.

What are the difference's between the 71' SBC, manual trans harness's and the 72' SBC, Auto trans harness's?? What mod's do I need to do to make it work? Oh, both trucks have full guages(no idiot lights...)

Thanks... Joe
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Old 06-09-2005, 10:19 PM   #2
Sweet72
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http://www.geocities.com/chevroletc1070/wiringdias.html
Not the best wiring diagrams but better than none.
I believe the only diff is the backup/neutral safety and transmission/temperature controlled spark (TCS) segments could easily be re-routed. The TCS can be deleted since it's purpose is to limit vacuum advance to engine temps above 82 deg. F and only in high gear.
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