Ok,
Here goes.... I am trying to wire an old "unknown" electric winch mounted on the trailer that will be used to haul Jeeps.( there's the slight on topic)
I have the idea that it will have a 25' remote with momentary on-off-on toggle, and 4 relays. because the winch couldn't possibly be larger than 3K lb. The question I would have is it nescessary to diode the relays because of the fact i'm not using solenoids? The relays are the typical firewall mount with the terminals 30/51, 85, 86, 87 connections rated at 30amp.
I verified that the winch motor terminals(2) are the only electrical contacts. Reverse polarity and reverse motor rotation. No juice provided thru ground of trailer frame
I found this link to some wiring diagrams and the last one is almost identical to the one I had thought out and drawn before my I'net search.