I recently put all new wiring harnesses less the dash harness on my tractor. Before i did this my alternator light on the dash worked. Now everything works correctly on the tractor except the dash alternator light. I have checked all the wiring and went through the troubleshooting guide in the service manual and everything checks out. Have power on both sides of the circuit board where the lamp socket twists in. I have tried a new alternator, circuit board, sockets and bulbs. The fuses are all good and all the wiring checks out. Power on both sides of the bulkhead connector. Can somebody tell me what the He** is going on? It is a later serial number tractor if that matters.