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Topic: Wiring harness behind driver side steer tire (Read 888 times) previous topic - next topic

Wiring harness behind driver side steer tire

Can anyone tell me what this wiring harness is for? I discovered it while fixing a leak on this bag behind the front driver side tire. You can see there are two wires going into the harness but when I peel back the insulation there were more wires. It looks like it's been this way for a long time. There is another harness of similar nature zip tied into that bundle of wires too.

Re: Wiring harness behind driver side steer tire

Reply #1 –
Is there something that doesn't work? Can you trace any of the wires, either forward or backward? Are any hot with key off? key on?

Re: Wiring harness behind driver side steer tire

Reply #2 –
Quote from: kb0zke –
Is there something that doesn't work? Can you trace any of the wires, either forward or backward? Are any hot with key off? key on?
Nothing that doesn't work that I'm aware of. It gets 12 V when the ignition is on. One end disappears up into the coach right next to the plug. The other end disappears into the mess of wires and airlines in front of the front air tank.

Re: Wiring harness behind driver side steer tire

Reply #3 –
Just a WAG - Do you have the same connector on the other front wheel area?  Wondering if it's something like an ABS sensor connector....  Can you see wiring going to each and are they connected?

TBH it looks like something got pulled apart, possibly during the tow or repair incident.

Mike Rash can probably ID it in a microsecond...

Re: Wiring harness behind driver side steer tire

Reply #4 –
Quote from: Michelle –
Just a WAG - Do you have the same connector on the other front wheel area?  Wondering if it's something like an ABS sensor connector....  Can you see wiring going to each and are they connected?

TBH it looks like something got pulled apart, possibly during the tow or repair incident.

Mike Rash can probably ID it in a microsecond...
The plugs do not exist on the other side of the coach. What's odd is that there are multiple wires behind the insulation but ultimately only two that go into the plug. The plug  only has two pins. When ignition was on, only one of the disconnected wires had power (red). The rest were inert. so either they aren't used for whatever reason or something sends power to them after some sort of input.

Re: Wiring harness behind driver side steer tire

Reply #5 –
That one has me stumped.
Check to see if our brake lights are working when using the retarder.
The other thought is does the windshield washer pump work?

Mike

Re: Wiring harness behind driver side steer tire

Reply #6 –
The big bundle of wires are in every Foretravel of your vintage, as wires that feed the dash. Open the dash and you will see that big bundle wires in the corner.

Not sure what your mystery torn wire plug is for. Interesting that it has live voltage indicating it was likely accidently torn off by tire or some other movement.

Re: Wiring harness behind driver side steer tire

Reply #7 –
Are the two similar plugs different genders.  Could they plug into each other. 

If both are same gender, ideally female, both could be part of the OEM wiring harness, designed for some optional device, and unused in your coach.

With three wires, usually one positive, one ground, and wonder what the 3rd is controlling.

Re: Wiring harness behind driver side steer tire

Reply #8 –
Do you have the factory wiring schematic? If so, Can you identify any numbers on any wires in the bundle that were protected from the elements? If so, That may at least get you close and it would be a matter of elimination of the identifiable wires to find the mystery wires.

At least "in theory"

Re: Wiring harness behind driver side steer tire

Reply #9 –
Upon further looking at photos, it looks like each of the plugs are in two parts that are snapped together.

One half has the 3 wires and the other half has no wires coming out, possibly indicating that there is something inside the 2nd half that completes the circuit or is a dummy end waiting on some other device to plug in.

Suggest to unsnap the two haves and examine the 2nd part without wires exiting that part.

Re: Wiring harness behind driver side steer tire

Reply #10 –
I called Keith Risch and he's in the process of saving the day. He's pretty sure they're for the slide-pin sensors and he's going to peal back one that's intact and inspect for me so I know which wire to reconnect to the plug

Re: Wiring harness behind driver side steer tire

Reply #11 –
They are for the limit switch for the out of the slide out

Re: Wiring harness behind driver side steer tire

Reply #12 –
Quote from: red tractor –
They are for the limit switch for the out of the slide out
Thanks Ron,

Where are these limit switches? Are they for the slide pins or installed such a way that as the slide extends (or retracts?) they are depressed?

 Do I need to worry about the slide arms overextending with a malfunctioning switch?

Re: Wiring harness behind driver side steer tire

Reply #13 –
The limit switches are located on the arms that move the room in and out. They don't control how far the room moves only sends a signal to the control box so that it knows if the room is in or out

Re: Wiring harness behind driver side steer tire

Reply #14 –
Quote from: red tractor –
The limit switches are located on the arms that move the room in and out. They don't control how far the room moves only sends a signal to the control box so that it knows if the room is in or out
So presumably one of the two wires going into that plug should be hot when the ignition is on, which is what that red wire does. I also assume there are two switches? So that other wiring harness is probably for the other one and I could strip that insulation back a little bit and confirm that way.

Re: Wiring harness behind driver side steer tire

Reply #15 –
Yes
 

Re: Wiring harness behind driver side steer tire

Reply #16 –
I peaked at the wires to the other wiring harness. Just a hot and a ground going into it. At some point many moons ago someone must've re-purposed some wire to get this job done. I just hooked the hot red wire back up to the plug and the slide worked as expected.

Thanks for the help on this one red tractor  ^.^d