I found it, but there was no thin plastic shield. Should I buy a replacement for it? The red fuse is good. I'm just going to go ahead and go to my local MB dealer and purchase one. When I pulled up the OVP it seems very easy. Tried to push it down and it seem its not locking. Is there suppose to be some click to lock that I may feel? It's behind some rectangular box with some heat sink on top, so I can't easily see it to see if the OVP relay is actually lock in at the bottom.