2018 Forestriver Flagstaff T12RBTH

[Colorado-A-Frame]

I have a new to us Forestriver Flagstaff A Frame Toy Hauler. The 7 pin is tow cable is damaged. I need to replace it.

I’ve searched the documents and haven’t been able to locate the exact wiring diagram. There are a ton posted…but it’s so hard to tell if it’s correct for my trailer.

Does anyone have a confirmed diagram for my camper?!?!

Thanks in advance!

 

[bikendan]

Moved thread from the Tech and Repair section to the A-frame sub-forum for better help from other A-frame owners.

 

[pgandw]

At least for my 2019 A-frame, Roberts RV Sales in Denver had pre-made 7 pin harnesses that connect with camper wiring near the junction box under the a-frame of the trailer. Harnesses were available in 4 and 6ft lengths. No wiring diagram needed, just connect the connectors.

Roberts sells A-frame and pop-up parts, and ships at reasonable rates.

Fred W
2019 Flagstaff T21TBHW A-frame
2022 Hyundai Palisade

 

[PapaGlenn]

I second phandw’s advice, get a replacement from Roberts Sales. They are awesome to deal with.

 

[Colorado-A-Frame]

That’s great advice…I crawled under my camper and took a couple of pictures. I don’t seem to have a traditional “junction box”

I have what looks and feels like a molded rubber piece. Is this what you are referring too?

 

[pgandw]

That’s great advice…I crawled under my camper and took a couple of pictures. I don’t seem to have a traditional “junction box”

I have what looks and feels like a molded rubber piece. Is this what you are referring too?

That rubber piece is 2 cables connected together (2 rubber covered plugs). That's where the 7 pin cable joins the camper wiring. Just replace the entire 7 pin cable unless you enjoy wire tracing and joining. Roberts and Forest River should have the pre-wired cable in 4 and 6ft lengths so it can be adjusted to the 7 pin plug on your tow vehicle.

If you are a glutton for punishment, you cut the cable and join wires manually. Been there, done that on older trailers.

Fred W
2019 Flagstaff T21TBHW A-frame
2022 Hyundai Palisade

 

[PapaGlenn]

Go to the Roberts Sales “Parts” page and look for “wire loom” the one for yours is $43.

 

[Colorado-A-Frame]

Awesome…I called Robert’s it sounds like they might not have anything longer than 60”. I’m keeping my fingers crossed I can order a longer one…I need 72” minimum

 

[Colorado-A-Frame]

Welp…60” inches is the max length available from Robert’s. I did also call Esco (the manufacturer of the 7 pin) apparently they manufacture the 7 pin cable then send it to RV Pigtails to manufacture the Forest River/Flagstaff end or junction. I’ve got a call into them to see if they have or if I can special order a new cable in a length longer than 60”. Their website indicates that they have lengths 60” and 144” nothing in between…finger crossed!

 

[PapaGlenn]

An alternative would be to get an extension. They are under $20 on Amazon. Curious why you need that much length.