Replace your OVP relay.

Forgive my ignorance but what is the OVP relay?

Just type in OVP in the search box or Over Voltage Protection Relay.

You'll get more info to read than your brain can process.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".