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Old 07-10-2013, 04:00 AM   #1
JCampbell
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What is it? V5.3

Dropped the new 305 into my '84, started hooking everything back up and came to a roadblock when I found this. Comes out of the harness w/ the 12v power for the coil. Only thing I can think of is it's the unused tach lead that plugs into the distributor.

Any thoughts?

Oh, the color of the wire insulation is a light blue/green.
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Old 07-10-2013, 04:23 AM   #2
Jabes1
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Re: What is it? V5.3

I'm thinking tac as well... check for 12v from that lead. There shouldn't be any volts from it if its for the tac.
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Old 07-10-2013, 04:33 AM   #3
JCampbell
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Re: What is it? V5.3

You up, too?

Battery isn't in the truck yet.
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Old 07-10-2013, 05:19 AM   #4
Jabes1
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Re: What is it? V5.3

Yup.... studying for a test.
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Old 07-10-2013, 08:34 AM   #5
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Re: What is it? V5.3

didnt you go from carb to TBI? Is it for the choke heater? Here is a killer thread...
http://67-72chevytrucks.com/vboard/s...iring+diagrams
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Old 07-10-2013, 11:46 AM   #6
JCampbell
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Re: What is it? V5.3

Hmmm...I'll check that out. Perhaps it is for the choke and works in conjunction with this:

http://67-72chevytrucks.com/vboard/s...d.php?t=588047
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