DavesTractor
Elite Member
One simple way to help determine if it is likely safety switch or start relay problems is turn on the tractors headlights. Now observe these lights carefully as the assistant attempts to start the tractor. If the lights dim a bunch or even go out, then the corroded cable, corroded connections or just defective battery are likely culprits. If the lights stay near full brightness as the tractor is attempted to crank, then it is not likely a battery/cable/connector problem and much more likely is the key switch or one of the many safety switches in series with the coil of the start relay or the start relay itself being defective.
Exactly. Couldn't have said it better.