[TowerTalk] OT: Lessons to be learned

[KD7JYK DM09]

> Also discovered a great site, IFixit, for those who are determined to 
> their own repairs.

I have an entry in there, or maybe it was FixYa, it's been a while, how 
to test, and diagnose for issues with a contact (one of several, 
stacked) in the start/run switch of some mid-90's GMC vehicles that 
results in engine RPM limiter engaging, tachometer failing to indicate 
operation, shift indicator lamp ceasing to illuminate, or flicker, and 
transmission dropping into "limp home" mode".  Normally a shotgun 
approach of extensive affected system testing, and replacing parts, even 
at dealerships, it was found the issue of multiple vehicle systems could 
be determined between two wires with an ohm meter.  I think GM finally 
posted a TSB (technical service bulletin) based on it.

Kurt