RV? Total shot in the dark...

JPblind · Jun 15, 2022

Looked everywhere on the net and nearest big city is 65mi away. Problem is I have a 2011 E450 chassis RV (sunseeker class c). Don't know if anyone else had this problem but front right signal doesn't work, bulb good blows fuse which the brake, hazards and both turn signals are on ( which is stupid as fu!k). Checked all grounds I could find(all grounds good) and rv has under 11k miles on it. Maybe bcm whatever the **** that is.

SS! · Jun 15, 2022

How’s your insurance coverage? If you need help making it look like an accident send me a PM.

BLooDTRaCKeR · Jun 15, 2022

You using an ohm meter to ring out circuit and check grounds?

What’s fuse rated for?

Sounds like bulb or relay has issues under load. I’d swap relay and see if problem migrates then change bulb if that didn’t get you anywhere.

JPblind · Jun 16, 2022

Parking lamp works on right side so thats getting power. Might be the switch itself?? Only Ford I own and this thing has more problems with the chassis then the cabin part of the rv.

SS! · Jun 16, 2022

Does it blow the fuse right when you try to engage the right blinker? Or is it delayed?

JPblind · Jun 16, 2022

Theres a delay at times and other times it blows the fuse just starting the rv. Went through 4 fuses now troubleshooting the problem. Bought this thing in anchorage so its travelled the alcan a couple times (about half its mileage) now it gives me grief using it a few times a year on local trips.

SS! · Jun 16, 2022

JPblind said:
Theres a delay at times and other times it blows the fuse just starting the rv. Went through 4 fuses now troubleshooting the problem. Bought this thing in anchorage so its travelled the alcan a couple times (about half its mileage) now it gives me grief using it a few times a year on local trips.

If it blows occasionally just starting the rv it’s likely not the right signal. How much of the wiring can you visually inspect?

JPblind · Jun 16, 2022

All wiring from what I can see anyway looks good no chaffed areas. Could try swapping out the BCM where ever that is. Guess thats what controls all the lights and power windows. Only other thing I can think of besides selling the thing.

mevertsen · Jun 16, 2022

Turn signal switch. Everything runs through that.

CFMuley · Jun 16, 2022

Sounds like your blinker fluid is low.

JPblind · Jun 16, 2022

You think I'm stupid thats the first thing I checked.

SS! · Jun 16, 2022

mevertsen said:
Turn signal switch. Everything runs through that.

No it doesn’t.

mevertsen · Jun 16, 2022

SS! said:
No it doesn’t.

I just went through a similar problem in my Dodge. All kinds of weird light issues. It all traced back to the turn signal switch.

pounder · Jun 16, 2022

Another option is if you have a connection for the RV to pull a trailer behind and the light pigtails that they spliced into the main light line may have water and causing issues.. seen in fords, chevys, and dodges when they have trailer lights added in box and when the rear adapter cap isn’t on and let’s water in. Or maybe just utilize it as Breaking Bad and make some glass