Help me diagnose my turn signal problem in my '74 f-100...

Using the tech article here on this site, I have traced my lack of working turn signals down to my turn signal switch. But these things ain't cheap and my rig has what appears to be a newer one in it already. So before I junk it and put myself in the poorhouse, check out what I am dealing with to see if it is fixable...

I removed my steering wheel and drew the following diagram of the column/switch:


I then used a test light to determine what the voltage was doing while the switch was in different positions, with and without the brake pedal:




What the heck is going on here? I am too obtuse to understand what I should do...

 

Those drawings were 8" x 11" when drawn, but after going through the scanning/posting process, they are quite a bit smaller now. Sorry.

 

Here's a real pic of the switch itself:



WIRE LEGEND---

On the cam itself, from left to right:
Blue wire
Red/Black wire

On the Hazard switch from left to right:
TOP=
Blue (from cam), White/Blue, White/Red

Bottom=
Blue (down through column), Green/White, Red/Black

 

Anybody???

 

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