I recently purchased a 1993 300E 2.8L. The car started right up, however, something was draining the battery and causing it to be dead overnight. I attempted to find the short by removing fuses from the fuse box under hood, one by one, and then testing for current draw at the battery. I checked all the fuses and found nothing wrong, but still had a draw at the battery. Then the car stopped starting. It would just turn over but not fire. I did some research on this site, and since my abs light stayed on constantly, I fiqured the OVP was the culprit. I got another OVP, Part # 201 540 32 45, put it in and the car started right up. The abs light still stayed on, but the car started, however, now it won't shut off with the key. To shut it off, I must pull the fuse from the OVP. Does the OVP control shut off? Should I have purchased an updated OVP with the two fuses, if so, what would be the part #? I suspect that the ignition switch may be bad but I wanted to confirm that the OVP isn't still bad before I rip out the dash to change the ignition switch. Anyone have any suggestions or should I just install a new ignition switch?