Bobcat T-250 won't start without jumping power to starter

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Hello! My bobcat won't start unless I jump power to starter. Once it cranks, it runs great, but won't move. Prior to this it would sometimes crank using the key, but wouldn't move. All of the fuses seem to ok. I replaced the battery, and seat safety sensor, and alternator with no luck. Any ideas would be greatly appreciated. Thanks!

 

[flyerdan]

Sounds like it could have a corroded connector somewhere in the overhead panel that's interfering with computer signals to unlock the drive. It could also be a bad ground somewhere.
Grab the T250 book from the manual thread and go through the electrics troubleshooting guide to see if it helps your issues.

 

[Bswwood]

Sounds like it could have a corroded connector somewhere in the overhead panel that's interfering with computer signals to unlock the drive. It could also be a bad ground somewhere.
Grab the T250 book from the manual thread and go through the electrics troubleshooting guide to see if it helps your issues.

T250 should be giving a code if it will not move due to a fault somewhere. Do you have any codes present? swap the relays around and see if anything changes.