Our 08 SJ is driving me nuts! More Electrical Issues

[Baja 252]

It's been a fresh water ski that has ran perfect for 10+ years, but this last year it's driving us crazy.

First we had a water in the ebox issue - solved that, grommets around battery cables were letting water in. New cables and grommets and confirmed fixed, the box is now bone dry.
Next, a bad CDI issue, Switched to Zeel - solved runs great.
Next, a no crank issue - fixed that with a new start stop harness. Old one had corrosion and bad insulation in the handle pole. S/S circuit works great now.

The past couple weeks, we are having dead battery issue. If the ski sits for 3-4 days the battery is dead, something obviously is draining it. Are there any components that are known to cause this? The only thing that has never given us any issues is the stator, it's original, can it cause this?.
I know it does charge the battery when it's running because if you ride it every couple days it will go for weeks with no dead battery, but let it sit for 4 or 5 day and it's dead. If I charge the battery and don't use the ski it will be also dead in 4-5 days also.
I'm going to have the battery checked.

Any other ideas what to look for?

 

[JC-SuperJet]

The Zeeltronic CDI draws power at all times. It's supposed to be a minor draw but...

Do you have and Electric Bilge Pump? Inspect the Switch and Pump.

 

[Baja 252]

I didn’t know that about the Zeel.
I’ll check out the bilge pump switch, easy enough to unplug and see if it’s still drains the battery.

 

[Quinc]

Also worth taking the couple minutes to unhook the ground from the battery after your done riding for the day.

 

[Harbor]

Does your volt meter have a mA amp scale ? If it does you can take a current draw measurement with it. See if your above 30mA / .030

Typically parasitic draws below 1 amp or .999 will kill a battery, so if your meter only has an amp scale you may not be able to see the draw…

So if you measured and confirm a draw, say you measure 100ma, then we want to start disconnecting one item at a time while measuring the draw until the draw mostly goes away….work from the easiest to hardest

Something like, S/S, then fuse, then bilge pump, then zeel, then stator, then large red starter wire ?

Something that can help,, is to not disturb the circuits prior to measuring, take a small jumper wire with small alligator clips and hook to negative battery cable and to need battery post… then disconnect the negative cable from the battery. Than with your meter on and in ma scale, hook to neg post and neg cable, then disconnect the jumper and measure for a draw..

Sometimes disconnecting the battery cause a module to unlatch unlock and stop drawing, so you measure no draw and the tail chasing starts cause we couldn’t see that draw…

Another thing that can help is first make sure you meters fuse is not blown, meter cables are good and meter can measure current draw… if it fuse is blown you won’t see any draw…..