TrAb

I recently picked up a 1991 240sx from a friend of mine. He told me before i picked it up that he blew the head gasket in his old motor and had a shop put in another motor from a 1997 240sx. I dont know how much of this is true. But none of the gauges on the dash are working and i cant figure out why. I checked all the fuses and there fine so i have been looking for any loose wires. I saw these two wires unplugged in the picture below what do they go to?

TrAb

I also found another loose wire around in the same area, it is a kinda sea green and looks to be a single wire into a small connector.

dkdeleon

the black connector is your EGR and canister control solenoid valve connector and the other connector is your S.C.V control solenoid valve connector. (S.C.V = swirl control valve)

jramosthe1st!

iTrader: (1)

bingo!
these solenoids being unpluged won't cause your gauge problem. if what you were told is true then maybe the newer engine and ecu were not wired entirely.

TrAb

How would i go about getting a wiring diagram that could help me with this thing?