I tried going to Bass Pro and checking out the floor models, but non of them have battery hook up, I guess to prevent everyone and their uncle from pressingall of the buttons and wearing it down.
I understand the red/black, +/- thing, it's just that there is a definite +, with an inline fuse and rubber boot, but there is also a black wire with a tag on it saying to connect it to the battery
That leaves another black wire of the same guage, and another black wire ~ 16-20 guage, which I can't imagine being anything more than a ground by the diameter.
In any case, a wiring diagram is in order, because I took a peek under the console, and there is a jumble of wires loose, as if meant for an aftermarket accessory, but how am I supposed to know what is what...
That's why I find it hard to believe that there are NO wiring diagrams in existance for a Tracker boat.