I bought a new oil pressure switch for the 98 diesel 6x4 gator which apparently has been upgraded from the original. The new switch seems to fit a 24 mm socket but the old one seems larger, it was hard to tell due to the location. I don't see that it can be removed with a wrench and the negative cable grounding bolt is in the way to remove the switch with a socket. Can the grounding bolt be removed or do I need to use a claw foot wrench? and if so, what is the older switch size? I know this is not a normal question but xcopterdoc will have the answer....I hope.