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Re: choke ???
My truck (84 GMC) and my son's truck (86 Chevy) both have an oil pressure sending unit on top of the engine and a switch on the driver's side of the block (right above the oil filter). The sending unit on top is for the oil pressure gauge only and the unit on the bottom of the block is a pressure switch on/off unit for the engine.
The wire for the electric choke feed is a Light blue wire that is connected to one side of the switch above the oil filter, along with a dark blue wire that is a feed to the instrument panel along with the tan wire that comes off of the oil pressure sending unit on the top of the engine. I have a factory shop manual for my truck and it shows these wires on a wiring diagram for a V-8 Engine "Light Duty Truck". The basic plan is to start the vehicle and the oil pressure closes the switch to start warming up the choke to open the butterflies inside the carb. This will stay powered up until you shut down the engine and power is removed. This is a way for GM to ensure that the motor started before opening the choke. Find that wire and connect it to your carb and it whould work, unless there is a problem with your circuitry.
I have put Edelbrock carbs on my Son's truck and Mine and they both work fine. I ran the ground wire for the choke to one of the screws that holds the bakalite cap in place on the choke heater, with no problem.
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