I can't figure out the wiring on my Yanmar 3HM solenoid. I find two large side-by-side termials on the solenoid; one has power from the battery switch and a red line to the key switch, the second has a braided copper line from inside the starter. On top of the starter is a 16 gauge black lead. Can't find the white lead from one side of the starter push button switch (the other side of the push button goes to the key switch). The solenoid is in a miserable place so would like to avoid removing it but would like to replace the white. I've checked the wiring diagram in the service manual but that doesn't help.

Any suggestions/info? Thanks in advance