1999 Ski Nautique dash wiring

[Plum Nauti]

I have a 1999 Ski Nautique with the GT-40 engine. My bilge pump can be energized from the dash bilge pump switch/circuit breaker. I do not have an automatic bilge pump energizing every two minutes for two or three seconds. Does this 12vdc circuit come from the ECM ? If yes, looking for a 1999 Ski Nautique wiring diagram or schematic.
Thanks

[Plum Nauti]

I would add that the auto bilge mode did run with the ignition off-there is no switch to turn it off as far as I know. The only way to stop auto mode is to disconnect the battery. A fellow skier has same year Ski Nautique with same engine and his auto mode can be shut off with a switch.

I could live with just a manual dash switch for energizing the bilge pump but am curious as to where the 12vdc for auto mode comes from. Bilge pump is a three wire pump.

[Plum Nauti]

I found the 12vdc going to the auto mode wire of the bilge pump ran to the starboard side of the engine and terminated at the starter solenoid positive lug. Circuit is protected by an in-line fuse which was open. Replaced fuse and all good.

[NautiqueJeff]

That's not the factory setup. If I replace a bilge pump on that era of boat, I usually install an automatic pump, but run the brown wire to the ignition dash switch, so that the auto function is activated when the ignition breaker is on, and run the manual power wire to the bilge breaker, so that the manual function is activated when the bilge pump breaker is on.