[DeTomaso] Hazard Warning Switch Troubleshooting

[JDeRyke at aol.com]

In a message dated 11/17/07 2:29:14 PM, cdifani at pacbell.net writes:

> This isn't the usual problem that uses the broken toothpick solution, but 
> something inside the darn thing. Essentially while 12VDC goes in on the 
> correct wire, 12VDC doesn't come out on the correct wire. The illumination portion 
> of the switch works, and it mechanically operates in and out with the correct 
> detents. But electrically there's some problems....
> 
> So, any ideas, references, or suggestions?
> 
> 
Sure. Take the thing out and disassemble it by unbending the connecting tabs 
in back. Inside you'll find a sort of cylindrical cam with a follower that 
goes up, down and sideways while moving along a groove in the body. Each position 
connects a pair (or more) of contacts. What often happens is, the plastic 
body warps with time (there's a spring inside), allowing   the cam follower to 
slip out of its groove. Things then get connected or disconnected that normally 
don't. 
Two known fixs: one involves adding a hose clamp around the body to squeeze 
it back into its OEM shape. This of course depends on the parts being 
more-or-less aligned before you start squeezing. The other (that I used) involves 
taking the thing apart and shimming the follower to again stay in its groove. I 
used a strip off a Gary Hall business card, making it close-to-factory fix!
A third way might be to buy a very similar but cheaper '70-74 Alfa Romeo 
switch, and slowly figure out what inputs and outputs might match a Pantera 
switch. No one has yet tried this, I don't believe. Note that Factory schematic 
color codes probably won't match your car, so be sure to draw a map for yourself 
before removing the switch. All this's right down your alley, Chris! Good luck- 
J DeRyke


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