I've read posts in this thread on and off since it started.

It sounds to me like there's absolutely no way that your backup (yellow) wire is connected to a constant 12v source. Are you sure your truck's wiring provides constant voltage on the wire you connected to the empeg's backup?

Other than that, I would suspect there has to be something wrong with your unit - more than just bad wiring on the sled.

Bruno
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Bruno
Twisted Melon : Fine Mac OS Software