Bartamos/all;
I should have been more clear. I did not simply connect the yellow wire from the switch to the yellow wire in the wiring harness.. I laid the two diagrams side by side and matched the functions/destinations. Left blinker wire from the switch to left blinker wire in the truck wiring harness etc.
I am pretty confident that the wiring harness is original. It matches the truck's wiring diagram by function and color of wire. The original signal switch was still in the truck and pretty ate up. I traced the signal harness from where it exited the bottom of the steering column to the multi prong connector. What I did was separate the connecter and then cut the male end off the end of the steering column harness. I left enough wire length so that I could solder the "new switch" harness into the "old" harness connector. I matched the wires by function as described above. I then simply pluged the connector back together. Walla: new switch tied into old harness.
I like your test plan. I was thinking I may be able to start by checking the continuity without having to power the switch. I can do that without having to take it apart or remove it from the truck. I like the sound of that. I'm going to copy/print your instructions so I can follow them when I get home.
All that being said, this was supposed to be an easy/cheap/temprorary fix. My goal (depending on the size of my tax refund) is to buy a complete replacement wiring harness this spring. I want to reinstall an original style switch on the column. I may be able to just clean up the one I have and put new guts in it. The switch in there now was only intended to get the truck to pass inspection so I can drive it while I continue to work on it.
Thanks everyone for the help and patience as I brute forece and ingorance my way through this!!
