Schematic wiring diagram/owners manual

[Tx Champ]

Not going to find anything in the owners manual that’s going to help. You can get the color code chart for marine wiring.

Actually the pre-Genmar manuals did have wiring diagrams. We've been in communication and he now has a copy of the 93 manual, complete with wiring diagrams.

The main colors for the wiring harnesses or DC distribution Champs up until the MegaLink are ...

Red - 12vdc from the battery positive post to the power switch (via 20A breaker).
Orange - Switched 12vdc from the power switch. That supplies power to most other things, electronics*, livewell timer, courtesy lights & other console switches
Blue - Instrument Lights
Purple - Switched 12vdc from the ignition switch. That supplies switched power to the tach, fuel guage and back to the engine.
Black - Ground. there should be a ground buss under the console for the black wires to attach to that is connected to the battery's negative post.
Gray - Anchor and Navigation lights.
Brown - from the livewell timer or bilge switch to the pumps

* Some sonar units may be wired to the unswitched 12vdc side of the power switch or directly to the battery. Owner preference.