New(ish) SP owner update

[GregOConnor]

several electrical issues often prove a ground problem.
Oil gauge - if it is a two wire sender, reverse the wires at the sender and have a look, then remove the sender and clean it up with diesel fuel or some pb blaster and reinstall. reinstall with a bit of locktight.
one of the problems I found with the gauges and switches is , some make contact by sending -12 ground and some make contact by sending +12. If you throw all the switches in the other position while looking at the gauges that might show the switch that is wired wrong?