GT300 No lights

[waterboy]

I have a gt300 and yesterday the overhead and side lights started working intermittently and now they are not working at all. If you put the CMI in the lamp check mode, the leds on the plc outputs for "stop" and "go" will flash but still no lights. I have checked all fuses on the lighting board twice and there is power at the lighting board put it appears no communication between the plc and the lighting board. Any help would be appreciated. Thanks.

 

[DPD36]

I would check the plugs/ pin connectors that run in and out of the lighting control box. I have had a few problems with these on my machine. On one occasion one of the connectors came loose on it's own. On another occasion I broke some of the wires inside of the plug when applying dielectric grease as part of my maintenance. These things are on the fragile side since the signal wires are so small and they crimp onto the pins.