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sasquatchgeoff's avatar
sasquatchgeoff
Explorer II
May 30, 2021

1979 Lance 400 12v Electrical

Recently, I became the new owner of an excellent condition 1979 Lance 400 that spent most of its life in a heated outbuilding. This addition to my driveway is among the most beautiful, but is the most mysterious yet, since no real schematics of any of the systems exist anymore.

I am posting to reach out to anyone with experience from the time that coach battery systems were an afterthought, and usually if equipped, were installed by the dealer. My 1979 Lance 400 has the special Lance-only 7 round pin connector pigtail for 12 volt connection, and no battery compartment anywhere in the coach. Curtis Trailers here in Portland had the pigtail adapter (hard to find) so I have the coach plugged into the truck, which provides 12v to the coach using the truck battery(s).

I would very much like to know if and what anyone used for a coach 12 volt battery source (aside from a battery box on the bumper) if they were around or have experience from this era of truck camper technology.

Thank you in advance!

2 Replies

  • Torklift offers a truck frame mount for batteries or you can add additional batteries forward of each wheel well. Using an Anderson connector between truck and camper will give you sufficient flow while making connections easy. Run heavy gauge welding cable between the truck battery and additional batteries using breakers at each battery connection if something shorts.
  • I had a 68 or 69 Red Dale of similar electrical design. It had no real place for a battery and no converter or battery charger of any type.
    Other than a light and an air pump for the water tank, there wasn't any loads like we'd have today. Most of the lighting was supplied by a permanent propane lamp on the wall.
    If you wan't more, you'll want to install a converter, outlets, lights and any other modern conveniences. As for a battery location, I mounted a second, isolated battery on the truck itself. If you wan't an on-board battery, you may want to check into an AGM type so venting is easier.
    And you may wan't to revamp the water system while you're in there.