I just hooked up a 24 V motor guide digital to a old 12/24 system. I took a voltage meter and found the two wires I needed. I also asked Stokleys before I hooked it up and they said that I would only need two wires and could get rid of the others. You can get rid of the wire that does not have any juice to it as far as I know. You could probably call your local boat store and they can tell you what you need to do over the phone.



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