I have the same thing and we connected from the battery. so do you turn it on/off with a switch or does the clutch work on its own? I cannot switch i just used a clutch for that.That's why you have check engine cause you don't have an e-manage ultimate and sometimes you when you turn on the charger you have more fuel and air,but there is no program on your ecu just a standard TS compressor program.And when you turn off the charger your ecu gives the same data for the engine.Come to messenger.My adress is the same like my e-mail what you already know!