Another Turn Signal Problem

[Rufas]

I'm trying to troubleshoot my turn signals on my 70 GMC. I have working 4 way flashers. I'm using a test light for my troubleshooting. I have power to the TS flasher just like the 4 way flasher. If I touch my test light to the non powered side of the 4 way flasher it will active. But doing the same to the TS flasher nothing happens. I've swapped the flashers, both work in the 4 way and neither work in the TS.

The right TS dash indicator stays on constantly. I've got diagrams but not sure of the functionality of the circuit. Both brown leads from the bulkhead connector have power. I have power on the brown lead going to the instrument cluster. I get nothing when using the test light on the TS harness at the steering column when activating the TS. I do have flashing on the dark blue and light blue at the steering column when the 4 ways are on. The steering column has been replaced, but the original steering column acted the same way. I think this would eliminate the turn signal switch.

Some more background. I running a single wire alternator and none of the wires for the voltage regulator or the blue and white wires that normally connect to the alternator are connected to the alternator. Neither of the wires with the 4 amp fuses for the amp gauge are connected.

It sound like a grounding issue, but I can't figure out the ground from the diagrams.

Any help would be greatly appreciated.

TIA
Eric