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Old 04-21-2021, 08:24 AM   #5
MT65
Senior Member
 
Join Date: Sep 2020
Location: Kila mt
Posts: 437
Re: Color engine bay wiring diagram for an 84

GM is big on color coding, violet for starter , pink for ignition, etc, looks like you have an HEI distributor...check another GM vehicle for the tach signal color code and you will probably have your answer...most all the aftermarket wiring harnesses are GM color coded...if my memory is correct, it’s a white wire
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