The choke wire on about 79-86 trucks goes from the fuse panel, through an oil pressure switch directly above the filter, to the choke and then to ground. The light on the dash has 12v on one side and the input to the choke on the other. As long as oil pressure is ok, the light will have 12v on both sides and stay dark.. 73-87 Chevy _ GMC Trucks » Fuel Systems and Drivability ». While looking through my shop manual from holmes last night I came across the info on the choke heater circuit. I was actually quite impressed with both the simplicity of it and the functionality as well. So I'm going to post a generic way for anyone with an electric choke to wire.
![[DIAGRAM] Diagram Of A Manual Choke For 1985 Chevrolet](https://i.ytimg.com/vi/y9dwVZ6XG4w/maxresdefault.jpg "[DIAGRAM] Diagram Of A Manual Choke For 1985 Chevrolet")
1985 Chevy C-10 10-14-2004, 07:16 PM #6: 69 air cab. Anyone know how an electric choke works? The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board. This is the diagram. The oil pressure switch is separate from the idiot light or gage sender. _____ Joe '75 GMC Gentleman Jim.. Detailed repair manual for the 1985 Chevrolet Monte Carlo V8-305 5.0L VIN H 4-bbl. Operation CHARM: Car repair manuals for everyone.. Electrical Diagrams. Choke Heater; Electronic/Powertrain Control Module (ECM/PCM) Carbureted Engine VIN G (5.0L)