My tuner and i are wiring up a Mac boost solenoid. We soldered everything in the ECU. There are 2 wires on the solenoid itself. Both are black wires . We know one where the wires hook up, but we dont know which wire is which. Can anybody help us?

 

polarity doesnt matter

 

Thats what came in my all of my searches, but the results were for a GM solenoid. We werent sure if the wiring would be the same. We didnt want to take the risk of messing something up.

 

it doesnt matter. give it 12v key on to one side, and the other side goes to your ecu output. or whatever else you are using to control it.