Re:

Posted by HH56 On 2022/7/15 14:55:10

I do think the relay is a good idea and like you said, not a lot of $ to add one. The relay in the drawing is the standard 5 pin with N.O. / N.C. contacts many stores carry. It is shown wired the correct way with power going to the common pin 30. In reality the 4 pin N.O. without the normally closed contact would work well in this application.

If you already have or can only buy the 5 pin relay I would add a piece of heat shrink over unused terminal 87a. Even though it is in the middle and sort of protected, I would still insulate it or you could reverse wires on 30 and 87 so the hot wire is confined to that one terminal when relay is off.