Just replaced the battery on my boat and, while tightening down the nuts, made the mistake of bumping my wrench into the other terminal, connecting both posts with everything hooked up. Sparks flew and now the motor won't crank and the tilt and trim won't work, but all the other electronics still function just fine. Tried a different battery, same results. The battery switch is the first thing in the circuit so I tried bypassing that only to have the same results again. Beyond that, I'm not sure what else could have blown. It's a 16 ft StarCraft with an '86 tohatsu m50c so parts aren't easy to find anymore. I'm not sure if it could have blown something in the motor, the starter, or hopefully just a cheap fuse. I'm fairly handy with a wrench, but not so much with electrical stuff so I don't really know where to go from here. Any advice would be greatly appreciated! Thanks!