I checked all the things that Carl Rock suggested and still the ground wiers getting power I did find where there getting power from the hour meter and push button safety switch for reverse cutting

SOURCE: Won't crank, relay good.

Fuse would be in the outside fuse box. Look for the one labeled starter. If you are not getting power to the starter, could be an ignition switch.

SOURCE: Yard man cuts off with PTO enganged and tractor in reverse

when you put the machine in reverse it engages a safety switch, the switch can be jumped out with a piece of elec. wire, or it can be removed and repositened where it will not come into contact with shifter

Testimonial: "I'm unfamiliar with machinery, a little more detail would have been nice. Overall, this was right on the money! The solution was extremely helpful!"

SOURCE: no reverse lights on 2000 grand am or shift out of park lock

try disconnecting the plug off the reverse light switch (on the transmission) and bridging out the 2 terminals and then see if your revers lights work if they do replace the switch

SOURCE: Cub Cadet Model LT1042 (2007) The reverse mode

Nearly all lawn tractors on the market are designed to kick the cutting deck out of drive when reverse is engauged.

This is controlled by a simple electronic microswitch which can be disconnected but I would advise to leave it as it is ;)

SOURCE: Reverse override button doesn't seem to change anything

The override button on your Yamaha isn't supposed to override reverse. It will only disengage the rev limiter while moving forward when you have the "Diff Lock" engaged. When this happens, you will see your speedometer change to zeros. If you want to override your reverse, you will need to rewire a few things. I found the info I needed at "grizzhopper.com" to rewire mine.