Thanks so much for your post. I also have a 300sl but to cold (Nebraska) to go check the OVP relay on that car. After your post, I checked the area you suggested, no OVP in sight! Arthur (see my current thread responses) says a '94 SL600 was not equipped with an OVP. I suspect, pretty soon, heavy hitting Mercedes specialists, like Arthur, will chime in on this issue that needs to be resolved once and for all. Either an 1994 SL 600 has an OVP or it does not. True experts know this answer. Thanks again for your help.

Ray