Found this while searching for Vanagon related stuff, it would be a good drop-in solution for anyone who isn't too handy with electrical to solve a weak starter solenoid circuit.
https://sites.google.com/site/vanagonheadlightrelays/hard-start-relays/hard-start-relay
The price is pretty good considering the time and materials involved.
https://sites.google.com/site/vanagonheadlightrelays/hard-start-relays/hard-start-relay
The price is pretty good considering the time and materials involved.