[hharney]

Aircraft is a P337 1977 G Riley conversion

The alternators would go off line if the cowl flaps were selected but was intermittent. Some connections were checked and terminals replaced on the cowl flap switches and everything appeared fixed. After a second flight the landing gear was selected down and the alternators went off line again. Now in the shop the gear selection takes the alternators off line even with the CB pulled for the gear pump. The alt CB does not trip just alt go off line. By selecting the master off and back on brings everything back.

Any thoughts out there?