I have done two restorations, my '37 and '50 COE. On both, I started the harness placement before the gauge clusters were in place. After feeding the harness through the cowl from the engine side I fed extra into the cab. That way you could sit on the bench seat and make all those little connections with the gauges on your lap, a lot more comfortable than laying underneath the dash wondering if you are shorting out some connection. You still have to perform acrobatics to place the gauges but quite a bit more simple than the electrical connections. I am convinced they must have done this on the assembly line at the factory.
Kent
