Why is there no power to anything?

Hello. It seems the winch on your Yamaha 'strained' its electrical system; 'fried' wires including the 'starter circuit' wiring. It's possible there is a 'blown' relay and/or fuse somewhere. Good luck and keep me informed; if you want to.

Sounds like a short or one of main sensors is burned out.. Mite get a voltage meter and see if your getting
Power or not. Go to google Image and get the schematics of the main wiring
Systems and go threw it piece by piece.
Or you mite just have a main fuse blown. Get the schematics and check
Each system good luck.

check and test fuses relays and connections winch is direct battery hook up --check ignition ---neutral /park --kill switches

Test the battery with a voltmeter, if good, check connection to battery. Has to have a real good ground.

Red is POSITIVE.
Connect to + terminal of battery.
Your winch should be equipped with a fuse.
Do not connect to any of your wiring except battery side of solenoid PROVIDED wire is same gauge or bigger (thickness) than winch wire.
Connect Black to frame or negative battery terminal.

First check the positive cable at battery and at the starter relay that the positive wire usually goes to. Somewhere right around there should be a fuse - that fuse goes out and your ignition system is kaput - pull start or nothing. If nothing at all happens - more than likely your fuse or what...yamaha had them on a lot of the 90s - 00s bikes - it was called a starter cut-off relay - it was a small black box wired in right by the postive cable where it goes to starter relay. Also check your ground cable at battery and where it goes to engine, usually. if all that checks out - let me know your year, make & model and if I have the tech info I can tell you where to start and how to troubleshoot - all the best

Look for a fuse where the postive cable comes from the battery going to the starter relay - this fuse (like a 10 or 15 amp box fuse) allows all the electrical to basically go to the bike. When it blows - no ignition, but the bike will usually pull start. - Your winch is probably still working because usually - it's hooked up straight to your battery. if that's not it - let me know and I can help you troubleshoot it - all the best

Is your fuse blown?

This winch should simple straight foward hook up. Your big red & black wires should hook straight to your battery. Red (+) black (-) if there is no fuse on the wires put at least a 20 amp.fuse close to your battery. These are the main power suply. They will go in a.small black box. Also coming out of the black box will be the wires that run to the cable in & out switch.and there should be one heavy ga. Wire going to the winch motor. Make sure the wire is good and clean when you hook it to the winch motor. Do not over tighten the nut . Just give a good snuging down. As for your solenoid box. That should be the little black box that your main power wires go into and controle wires come out of..

Use a test light at the contactor to see if the switch and wiring are good.If you see an input from the switch up to the contactor,make sure the connections are all clean on the control input terminals at the contactor.(The contactor is the device that changes the polarity of 12V to the winch to extend or retract-essentially a double throw double pole relay).