i was wondering how to hook up a aftermarket tach on my 92' accord its got 4 wires red,black,green,yellow i can get it to light up but thats it now my car has a factory tach but i want one with the shift light gotta be a follower i guess lol but let me know anyone if u know what to hook what wires to to get this thing to work even if i have to use the factory wires that'd be fine but not sure whats what so please help me out thanks