Ive tried looking everywhere for info on wiring a 3 wire harness to a 4 wire plug. The harness has white/red, black/yellow, and white/blue. circle plug has yellow/white, black/yellow, solid blue, and white/blue. One of these wires gets disregarded in the process. Can anyone tell me what goes with what? I have a canadian 97 si, putting in a b16.

 

What is the connector for a sensor a switch?

 

that kinda sounds like the map sensor or vtec wires. ican't remember exactly for the ek's. i have one but i dont have a harness lol

 

I think it's the alternator connector.

OP, you need to give enough information so that this is not a guessing game.