Check the 10 amp blade type fuse on the OVP. The OVP will be located just inboard of your master cylinder, easy to spot - silver with a red top and a clear plastic flip cap. The fuse will be under the flip cap. If the fuse isn't bad, or blows again soon, chances are you need a new OVP (over voltage protection relay).
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.