I am trying to build the controller box as well and looking for relays, I found this one at ACradiosupply.com it is part # R04-11A30-120. DPDT relay. $18

This is the correct one I believe can anyone confirm this?
koalphin Reviewed by koalphin on . DIY four light controller relay question? So I saw a link that MEDIVAX put up to build a four light controller. It sounds like a good project I'm having trouble with the relay. I've bought two now and they don't switch like they're supposed to. Has anyone built one of these and what relay did you use. Anybody, anybody? Rating: 5