ok, about a month ago i bought a p75 ecu for my LS it had been running like shit with the p13 i had on it...the car rine fine but kept popping out of 3rd gear, anyway about 2 minutes away from the parking lot my tranny completely seized on me...fine, my mechanic dropped the LS tranny, got me a b16 tranny and had it rebuilt to make sure it worked...now, the fukkin car wont start , the windows wont go up or anything my mechanic is telling me that the car isnt sending any current to the gas pump, distributor or anything electrical ....does anybody know what this might be??? also is there anyway i can tell how an ecu is manual or auto??...please help!!