Find a wire on the engine, any wire. Think of it as a branch, follow it to the nearest trunk. You've found a harness. Follow that trunk till it reaches anothern. You've found more harness.
'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.