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Read articles →This is a hands-on electrical troubleshooting video for a New Holland TC30 that starts then immediately shuts off. The creator walks through diagnosing a seat switch bypass, testing the start relay, and identifying a bad controller/lamp timer, showing exactly which wires (black/blue-white, white-blue and green-yellow) need jumping to get it running again. Useful for owners chasing an intermittent no-start or shutoff issue, not a buying guide or overview.
Posted by the D Turner channel, appears to be an owner or repair-minded individual sharing a real troubleshooting session rather than a dealer or reviewer.
It can be a bad seat switch connection or a bad controller/lamp timer. Jumping the black/blue-white seat switch wires and the white-blue and green-yellow controller wires fixed it.
Find the black and blue-white wires coming into the seat switch and jump them together. A bad jumper on them was part of the original problem.
The white-blue and green-yellow (or yellow-green) wires need to be jumped so they have contact through the controller once keyed on and started.
