I've been trying to find this part on-line without much luck. It is listed
in the Piper parts manual as 455151 but also referred to as 6041H105A. It's
the relay mounted along side the battery box. My Archer has been cranking
rather slowly even after replacing a dying G-35 with a new RG-35AXC battery.
This relay was almost too hot to touch 5 minutes after starting and then
shutting down the engine.

Best Regards,
Mike Noel