[KTL]

The one that Patrick offers is a two pole that goes on top of the engine at the flywheel end. The adapter they use must be M10 x 1.0 to M18 x 1.5 The reason I know that size is because the original case adapter for the single idiot light/oil pressure warning switch is in that location, and I have a mechanical oil pressure gauge connected there. It was adapted by the previous owner with a brass tee that tapped into that M10 hole and converted it to 1/8 NPT. So I removed that brass adaptation and installed a M18 x 1.5 to AN-6 adapter to plumb my mechanical oil pressure gauge and pressure sender.