Hit your local Kragen/Checker/Schucks for a cheapie $15 voltage regulator.
http://shop.oreillyauto.com/Pr...PartType=204&PTSet=A
Swap it out with yours and see if your charging voltage is where it's supposed to be (14-14.4).
Or better yet, just borrow the regulator off your Cobra for the test. If the voltage regulator is the culprit, then order a better quality $30-60 voltage regulator.
Answers to follow-up questions:
a) On the passenger side firewall in the engine compartment.
b) ANY auto parts store, and some gas stations.
c) Easiest part to replace on the car, besides the air filter. Just back it onto ramps or jack the passenger side up so you can crawl under it more easily.
d) Yes. Get a new one. They're cheap!
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