Hello! New member here. Have a 1997 GSI that someone installed battery backwards, and then hit it with a boost pack!! Needless to say, pretty sure the MPEM is toast. Replaced 2 fuses. Don't get any beeps when putting the key on. Get 1 beep only when plugging the harness into the mpem, or completing the circuit on the battery. From what I see, this mpem is non existent, it's the 2 plug one. My question is, can I get the 1 plug mpem that's all over the internet and use that?