and YES--When I remove the TEMP GAUGE sensor wire (yellow) and ground it with mt test light to the battery it moves.
So that said, my plan is to add two gauges if possible. The TEMP gauge which winston1 has done and I want an OIL PRESSURE gauge. Can I install an oil pressure gauge to this engine without taping the block ect? HAS ANYONE DONE THIS?
And the GREEN wires with the yellow stripe that match the fender light wires are not hot when I have the lights on? Just the RED is hot.
If your guage moved when you grounded it most likely all you need is this. Yanmar Tractor Parts TEMPERATURE SENDING UNIT - (FOR GAUGE STYLE)