Thanks. I've done OVP searches and could not find the definition (was still looking when you posted).
I get radio interference coming on and off when I go over bumps. Truthfully, I can't tell if it is one speaker or both. If it is one, then it is a stereo issue, if both I was thinking maybe a bad plug wire. However, to your thought on the alterantor, a mechanic told me the radio noise (which was occuring when he changed some parts for me) was possibly the alternator. hmm...
Mike, if the SRS light not on does that rule out the OVP or not?
'88 560SL Pearl Black/Java 152K
'94 E320 Anthracite/Grey 89K
'94 E420 Black/Bamboo
'71 280SEL 4.5