Greg and Viper,
Thanks for all the help, What should I do to try and correct this? Is there something I need to re-wire, replace, etc. Do I need a new alternator?
In summary here is what's been done and measured so far:
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Key off battery reads 12.6 and the coil is 0.0
Key in on position but not running coil measures 5.9-6.2
Engine running battery reads 13.6 and the coil reads as high as 16.9, but jumps around with readings as low as 14.8, 15.5, 16.2, 16.9.......this is all at idle speed.
I have replaced the voltage regulator.
I have replaced the Negative battery cable and its ground at the block.
The new points are in and the Bronco is running perfect....except for the high readings at the coil which will eventually fry my points again.
Just need to know how to remedy this problem at the coil.
Many thanks again.