[prtrc]

For several months my charging gauge read at or near the red-line. Over the past week it is almost pegged-out if no lights or heat is on (when lights and heat is on it drops to 16-17, but still in the red). I replaced the battery and altenator but the problem still persists. All other guages appear to be OK. Where else should I look?

[bigfisheh]

Check to see if you have an in-line regulater. If not you might consider installing one.

[huskyjjc]

You may want to check the wires at the back of the alt. make sure the regulater wires are not grounding out . If they ground out that will send the alt. to full