18 volts at the battery (again)!!!!

[kxnomore]

I had this problem a while back and changed over to the internal regulator kit. Everything was good for a while, but this morning it's happening again.

Everything connection wise checks out okay, but it is applying full amperage to the battery at all times. Even disconnecting the plug on the top of the alternator doesn't make any difference. Neither does undoing the jumper wires at the old regulator connection. If the truck is running the amp gage is pegged all the way to the right.

So it's done this with both types of alternators, and with all new charging system parts.

Anybody have any ideas? Harness problems maybe???