Diode Board for Ground Power
 

The board, 1570043-3 is about as simple as it get, two terminals, two diodes, tied together at a single lug connector. My board is broken, cracked, that can be repaired, but I cannot read the diode numbers, Does anyone know what these are. I have a 1976 P337. The Board number is 1570043-3.

Help?

$4.88 ea on Ebay: https://www.ebay.com/itm/3AF8-ELECTR...r/360623352685

Multi-pack on Amazon: https://www.amazon.com/dp/B07XWXFV34..._f4-xFbTA2J9AR

Don't forget, if you have a fuse for the ground power under the front cowling on the pilot's side, there's a diode in there as well - follow the wire from the bottom of the fuse holder about 3" and it will lead you right to it.

While we're on the subject of ground power, does everyone know its impossible to charge your battery via the ground power receptacle(GPR)? Ground power input and battery circuits are split by a relay. Did you also know that on early models, the GPR will power the starter, but it won't power the avionics?

Don Nieser has those diode boards. New and used. If I was to do it again, I’d buy an unbroken board from Don and put new diodes from Newark or mouser or amazon on it. Commodore Aerospace.

https://m.facebook.com/CommodoreAerospace/