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Electrical problem in motor home

I have a''short'' somewhere in the electrical system of a 1982 holiday rambler class c motor home with a ford 460 v8 engine.I've changed out the alternator,voltage regulator,fuel pump relay, and ''brain box''.I also put a new battery in it.All the fuses in the fuse box are okay as well as any that I found in the engine compartment.Do you have any ideas as to what to check out next?

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  • gasteelman Nov 15, 2008

    The reason I feel that there is a short somewhere ; is the battery goes dead when i leave the cables hooked up to it overnight.I am able to "jump" it the next day. Also, I have disconnected the positive cable from the battery and then i connect a circuit tester between the positive battery post and the positive cable clamp (with the ignition off and all other electrical devices off)and the light goes on in the tester indicating a current draw to ground.

  • gasteelman Nov 15, 2008

    I have removed all the fuses(in the fuse block under the dash )one at a time checking each one to see if the circuit tester light goes out (this i think would tell me at least the circuit that the "short" is in) but i haven't found it there.I do not have a wiring diagram of this motor home or any other helpful information. Any more ideas ?

  • paul erickson
    paul erickson May 11, 2010

    what shorts out?

    do you blow fuses?

    are you burning up wires?



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My 98 Winnebago motorhome works fine when plugger in to power, but when trying to use on the internal 12 volt system it is dead. All the breakers are fine, but not sure if fuses are good, and realize those should be checked. unit is 90 miles away and hoped to have a few ideas when i treturn there this weekend

Posted on Jun 16, 2011

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Yes you have a short and your on the right track.
with your test light in line telling you have a short we need to start removing fuses to fine the circuit that is the problem let us know what circuit and then we can help.
later paul

Posted on Nov 15, 2008

  • paul erickson
    paul erickson Nov 15, 2008

    where we need to go next it to the starte solonoid and remove the wires there one at a time untill the light goes out we should find it here.

  • paul erickson
    paul erickson Nov 15, 2008

    did you go to the starter solonoid and find the junction for all the wiring and fuseable links there and pull them one by one .

    this has to work because this is where the whole body gets it power???


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Id need to know what shorts to really tell you exactly want wire it is man but id really suggest grabbing a olm meter and testing every wire arround the short if thats what you think it is my friend

Posted on Nov 14, 2008

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