Hi,
does anyone have a wiring diagram for this R107 year they can send? There is one on the web, but too blury to read & 380SL versions that aren't quit a match.

 

Hello - take a look at the link below. There appears to be a 280SL diagram although it may be too early of a model year to compare to. Perhaps it will still be helpful to you. Please let us know if you have any other questions and we'll do our best to assist.

https://www.sl113.org/wiki/Electrical/WiringDiagram