I'm going to attack this install the same way Neutrino did, so I'm shopping for a 4PDT relay. Digikey has the MY4-DC12(S) for $6.48, or the MY4N-D2-DC12(S)-ND for $28.65. The difference appears to be an LED indicator, and a diode on the sense input. I don't care about the LED, but should I care about the diode? Is this relay a good choice for this application?

Thanks for any advice from the electronically gifted.

--Dan.