Forum Discussion

Laurie_and_her_'s avatar
Sep 20, 2019

emergency start has been hardwired?

I recently purchased my camper. It is a 1990 E350 Catalina. I have been having serious issues getting her started after sitting for even a day. If I drive for more than about 2 hours she starts to die and I have to shut her off for a while.
I have solar installed so almost all of the time I am running house stuff off of those batteries. Nothing inside the camper should be pulling power from the original battery and if I switch my solar setup to all batteries off (original and solar) nothing in the camper works. (As it should be.)
After much investigation (and replacing things that were not the problem) I have concluded that the previous owner hardwired the emergency start. The button is gone and the wires are somewhere behind the dash. :-(
So, from what I can tell the start solenoid is always "on" and is killing my batteries. He has done something very odd with the wiring. The camper will NOT start from the starter battery (fully charged and brand new) with the house battery disconnected. She will start from the house battery with the starter battery disconnected. I cannot find a picture of how the wiring is supposed to be. And no, a technical schematic will not help me.:-( I have the Chilton book for it.
So, I am hoping someone can tell me or show me a picture of how this is supposed to be set up.
I am happy to post whatever pictures are needed. ANY help is greatly appreciated.

26 Replies

  • Your batteries positive sides are joined together with a solenoid. Open your hood, it may be to your left. The two large contacts come from the positive side of each battery. The small wire comes from the emergency switch. Note the color of the wire, and see if you can find it under the dash. If it is shorted to another wire under the dash, separate it. One of the wires goes to one side of the missing switch, the other wire goes to the other side of the switch. If you can't find the wires under the dash, just disconnect the small wire at the solenoid. Then run a new wire to the missing switch area. Install a switch with one contact going to the small wire you just installed. Connect the other side of the switch to the positive side of the house battery at the fuse box.
  • I have a volt meter. I do not have a test light. I do know if I remove the house battery and reinstall the drain stops. This is why I was hoping someone could show a picture of what it should look like. :-(
    I suppose for now I will disconnect the battery when not driving until I can find a real solution.
    The previous owner is not an option.
    I appreciate the responses. :-)
  • See if you can find an electrical person to help you troubleshoot. Maybe even a mobile tech who is electrically savvy.

    Jerry Parr
    602-321-8141
  • Your best bet might well be with the previous owner or the person who "created" your current issue. A remote viewing guess would be at best, . . . . . just a guess with little value.

    Chum lee
  • Sorry but this may utterly overwhelm your ability to diagnose and correct. You need handheld meters and a 12 volt testlight. Doing a repair by guesswork and hit and miss is impossible.
    .
  • IMO it’s time to hire a pro mechanic for your almost thirty year old rig.

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