I grabbed the new brushes from the dealer. Reinstalled the alt. and now the charge and brake lights dim every three or four seconds. The trucks been off the road for several days and was really slow starting this morning. I don't have the time or money to deal with this.
Oh, this weekend I had the 86 alt tested (the one in the truck now is from a 93 with a swapped plug) at the auto store, it tested no good so I traded it in for a rebuilt. So now I need to swap the plugs back and try again.