so had a new problem pop up while i was test driving my truck, all my interior lights and head light get a lot brighter when im driving, and when im at idle the get super dime. i have every thing stock right now, since then i have replaced the voltage regulator, but had little to no change. I put a voltmeter on the battery and it read 12.3 at idle with out load, turned on all the light with little change to the voltage. when i used the carb linkage to accelerate the engine the volt meter read up to 15.3 volts. a buddy of mine thought replacing the alternator might fix it.