1990 454 Efi Electrical Diagram

Apparently there is an efi supplement to the owners manual that i do not have available to me.

1990 454 efi electrical diagram. Tbi wiring harness conversion. Im successfully using an autometer 5291 hall effect vss sensor 60 with my new holley efi. I have no description of the 9 pin where its at or how its ran. Maybe my motor is wired differently than the 9 pin diagram posted on p1 of this thread.

First you need to go to junk yard and pull the engine efi harness or complete system if you can. 30lx 181 l4 1990 1997 0c856559 0k999999 817119a 4 50 806965a 4 89 96158t. Vi gm 454 v 8 1998 2000 wiring harnessefi parts. Autozone repair guide for your chassis electrical wiring diagrams wiring diagrams.

Fits mcm 500 efi alternator 8m8023423 delco 50 amp serpentine belt application. Save money with free shipping on qualified orders. Buy a genuine mercury quicksilver or aftermarket part. 1990 43 wiring diagram april 24th 2011 0840 pm changed motors due to a cracked block same engine but dont know where a single wire goes if someone knows where a 43 wiring diagram would be be much help.

Its been working great on the data monitor and data logger. The 16 pulses per revolution has excellent resolution for good signal at very slow speeds. Find chevrolet 74l454 fuel injection systems and get free shipping on orders over 99 at summit racing. Mercury mercruiser electrical system not all parts listed are available for the european cis africa and middle east markets.