I don't have schematics or a service manual so I really don't know where to start!

There is a red light on the dash with a plus/minus sign (pos/neg???) that is on. The battery indicator indicates a full charge. Battery passes every test I threw at it.

Where do I start?

Thanks in advance!

Calvin

Edit: Wow I didn't realize that Id had this forklift since July or that I had already started a thread!