Speedometer and odometer not working

[Tazdad]

My speedometer and odometer stopped working suddenly. I have replaced the rear axle speed sensor and the instrument cluster, still not working. I have checked all the fuses. Please help! Thanks!

[RY469]

It does sound like a (12V) power issue. You did not mention what type RV you have, but if you discern what the chassis is, you can get a wiring diagram for your installation. Be much easier troubleshooting from there. Your VIN most likely will identify the chassis (not to mention if it's a Ford, GM, etc ignition key)

[Tazdad]

It's a 1999 Ford Gulfstream Sun Voyager.

[RY469]

So it's a Spartan Chassis. See this link: https://www.gulfstreamcoach.com/medi...un-Voyager.pdf
You can look up this chassis and find wiring diagrams to help find your issue. That's where I'd suggest you start.

[Tazdad]

I have tried every tip from RV Service Techs have told me and it still doesn't work. I have tried to follow the wiring and it's fine. I'm at a total loss at what is wrong. I'm afraid I'm going to have to buy a new instrument cluster.

[Tazdad]

It's a 1999 Ford F550 Super Duty Chassis with a V10-415 6.8L.