Installed the battery yesterday after it being on a tender over the winter. Truthfully, I may have inadvertently swapped positive and negative wires. Got a spark. When I corrected the issue I get no radio, gauges, or engine turnover. The only thing that works is the blower, which doesn't require the ignition to be on. I have checked all around at the fuses around the engine and under the dash I can find. Found a blown 10 amp fuse under the dash that's connected to yellow wires, didn't think that would solve the issue anyway and it didn't. I can't find a red/purple wire with a fuse to replace under the dash. The only thing that it could be had like 5 prongs connected to it. Removed it but couldn't see where it is actually a fuse or not, photos attached. If this is a fuse who do I contact for a replacement, local marina? which is closed for a couple days over the holiday weekend.
I did some reading in the some other threads and saw the comment that the wiring goes from the battery, to a 90 amp fuse, to the 50 amp fuse to the ignition switch. Checked the battery with a voltmeter, checked good at 12 volts. The 90 amp fuse is in a precarious spot so I'll check that but will take some wiggling and will have to have my wife watch the voltmeter. I connected the voltmeter to the ground on the battery then to the the 50 amp fuse and get .219 on both sides. Since there is a reading on both sides does that mean its good? Or should the reading be higher?
I did some reading in the some other threads and saw the comment that the wiring goes from the battery, to a 90 amp fuse, to the 50 amp fuse to the ignition switch. Checked the battery with a voltmeter, checked good at 12 volts. The 90 amp fuse is in a precarious spot so I'll check that but will take some wiggling and will have to have my wife watch the voltmeter. I connected the voltmeter to the ground on the battery then to the the 50 amp fuse and get .219 on both sides. Since there is a reading on both sides does that mean its good? Or should the reading be higher?