thread is old, but figured to post anyways.
Pulled my MSD and didn't know to firmly press it back in after clip engage. Car would not go into D or R. So I thought I messed up mine. after measuring continuity I found it to be good.
inbetween testing continuity MSD. I found and purchased 2 MSD from ebay.
Figured best to have spares anyways.
Posting link price is $15 or best offer. I offered 10 each for 2, which was accepted.