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Originally Posted by izzyashdown
I am having trouble with finding a wiring diagram for my 1976 overlander. It's a 27' double with the back end bathroom. Looks like someone has added an extra service panel for some strange reason. trying to put it back to the way it should be. Does anyone know where to find this schematic?
You may have a situation where a prior owner has replaced the original Univolt power converter with a more modern unit. Many of the newer RV power converters do not have built-in fuse panels like the original Univolt so part of the upgrade to a newer power converter involves installing a new 12-volt DC fuse or circuit breaker panel.
You may find it beneficial to have the owners' manual and repair manual for your coach, and these may be obtained from Airstream:
Good luck with your investigation!
P.S.: If the original Univolt has been replaced, that is generally a good thing as these OEM converters have a reputation for boiling the battery electrolyte resulting in shortened battery life.