Hello everyone, new to this site but I could use some help. I just picked up a Sovereign 18 that the PO said needed a new ign. switch. It was worn so I ordered one and put it in. The battery is fully charged but the tractor will not start by the key, I have to jump the silenoid with a screwdriver (noy my fravorite thing to do). Once I got it started and warmed up, in the dark, I turned on the lights and started to move it It just shut down like I turned off the key (lights and all). Could this be the circuit breaker and if so would a bad one cause enouph voltage drop to not properly engage the starter silenoid?

Any help would be great.