Forum Discussion

JumboJet's avatar
JumboJet
Explorer
Oct 06, 2014

Need Help - 1999 Ford F53 Chassis Wiring

I need to find someone that has a Class A built on a 1999 Ford F53 chassis that will let me view the wiring from the Incoming Air Temperature (IAT)sensor to wherever it connects with the main wiring harness.

Mice chewed the wire into about 6" from the IAT sensor and I cannot find where to splice in a new connection.

If you live within a 100 miles of Fayetteville, AR. I would be happy to come and look at your motor home wiring.

This is not a scam and I am not a predator of any type.

I have searched online, spent money on a CD for 2000 F53 with drawings, etc. and cannot find where this wire enters the main wiring harness. The 2000 F53 IAT and MAF sensors are integrated into 1 unit. The 1999 F53 IAT and MAF sensors are separate units.

Thanks if you can help.
Class A

4 Replies

  • JumboJet's avatar
    JumboJet
    Explorer
    Oct 06, 2014
    allbrandauto wrote:
    again strip that harness back same color wires have to be there solder 2 new wires and tape harness up I am assuming iat sensor is by air cleaner if so it will be in same harness as maf


    Wires are grey and grey w/red stripe. I will run down the MAF wire. Good thought - thanks.
  • allbrandauto's avatar
    allbrandauto
    Explorer
    Oct 06, 2014
    again strip that harness back same color wires have to be there solder 2 new wires and tape harness up I am assuming iat sensor is by air cleaner if so it will be in same harness as maf
  • JumboJet's avatar
    JumboJet
    Explorer
    Oct 06, 2014
    allbrandauto wrote:
    strip harness back to where there is good wire and give me the wire color is it 2 wires or 3 may be able to help did mice chew all the way to connecter is there wire colors there


    Two wires. I'll get color when I get home.

    Mice left about 6-8" that connects to the sensor but I cannot find loose wire on any wiring harness close by. I know the main wire eventually goes to pin 39 on the PCM. I just don't want to remove the shield from that harness wire bundle.
  • allbrandauto's avatar
    allbrandauto
    Explorer
    Oct 06, 2014
    strip harness back to where there is good wire and give me the wire color is it 2 wires or 3 may be able to help did mice chew all the way to connecter is there wire colors there

About Motorhome Group

38,769 PostsLatest Activity: Apr 03, 2026