Guys, Under my 1986 328GTS passenger seat, I have some electronic device that I couldnt identify. ( car is 62 miles away getting 30K major, sorry no picture ) So before I start tearing everything apart I thought I'd ask for everyone's advise. My thoughts are it cant be an stereo amplifier (no RCA jacks). Possibly an old cell phone system or maybe even a lojack locator. DETAILS: The rear of the device faces my engine compartment and I do recall these facts. Black box- 1 1/2 " in height, X 8" W , ~ 10" long BNC COAX connector - (some antenna) w/ RG58 or RG59 cable connected RG-9 type serial port connector- ( nothing connected though) About 4 additional wires, (power related in gage) It's neatly wire bundled and the wires & coax cable go up into the door jam coverings. (looks professionally done). The car has no spare antenna's or unique modifications that I've found. (previous owner had no idea it was even there) Any suggestions? My mechanic has never seen one of these either.. I'd appreciate any help Thanks Patrick I'm getting the car back in a few days.. I'll follow-up with pictures.