For anyone else interested: it is mounted next to the F1 relay on the LH side central fuse box. It is a standalone relay (70amp mount - 50 amp relay) i.e. not one of the micro relays in an enclosure, and it is owners/workshop manual reference PSR11. It is the same type as the F1 pump relay.
I replaced the air pump in my 360 last year. There was voltage getting to it, and could be checked by removing the cap on the pump to access the wires, so I didn't have to track down the relay, but in case it goes south this is good info. Thanks for posting! (Subscribed)
