I just realized I posted my response in your tutorial thread....sorry....here is my response:
It didn't work for me, actually I have the base connected to car battery, collector to the J6 + pin on the M2, and the emitter out to the amps. I can test that I have 12v at j6, but the emitter line shows 0 voltage. I used the exact transitor package you had listed in your pictures....however, that package comes with 15 transistors (5 ea of three different types). The one I used was the 2n4401052.....should I have used one of the others? There is a 2n3901331 and a 2n2222a338 also. Seems simple...but not working properly. Please advise!!