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greguw · 04-19-2011, 09:11 AM

Mag pick up triggered off the four crank bolts.
GM 4 pin HEI module NAPA TP45SB
W= positive lead from the pickup
G= negative lead from the pickup
C= tach lead
B= positive, ign on

Only problem I found now is I have to change my fan plan ... I'm going to have to go electric . I found a 16" flexalite that moves 2500 cfm , new in the box a guy never used for 60 bucks shipped ... not too back considering summit is selling it for $150 .
Then I reconsidered running a first gen radiator but seems the original 3 core will work just have to play the hose game .

04-19-2011, 09:11 AM	#84
greguw Registered User Join Date: Jun 2010 Location: Bucks County , Pa Posts: 223	Re: 1990 GMC Suburban ... Cummins Powered Mag pick up triggered off the four crank bolts. GM 4 pin HEI module NAPA TP45SB W= positive lead from the pickup G= negative lead from the pickup C= tach lead B= positive, ign on Only problem I found now is I have to change my fan plan ... I'm going to have to go electric . I found a 16" flexalite that moves 2500 cfm , new in the box a guy never used for 60 bucks shipped ... not too back considering summit is selling it for $150 . Then I reconsidered running a first gen radiator but seems the original 3 core will work just have to play the hose game . Last edited by greguw; 04-19-2011 at 09:16 AM.