Trailer disconnected in dash.

Copy, I'll look, thanks

---------- Post added at 09:29 AM ---------- Previous post was at 09:06 AM ----------

Looks like 9 and 21, but all they say is trailer battery charging relay and fuse.

one of them is for charging, the other is for the brakes. not sure which is which. might as well put them both in

Well, I guess that if the electric brakes are not hooked up that you will get the trailer disconnected warning. Crawled under the trailer and I see the electric drum brakes just have pigtails sticking out.

Hoverp said:

Well, I guess that if the electric brakes are not hooked up that you will get the trailer disconnected warning. Crawled under the trailer and I see the electric drum brakes just have pigtails sticking out.

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ha. did you find the other ends?

Looks like they were not used. Now I have to figure out how to wire them into the 7 way .

hope you werent trying to tow today

So we have to put a fuse in for your truck to utilize trailer brakes? Never had to do that on any of my other Fords.

Well I can't test that the power to the brakes from the TBC on our dash is routed through the relay or fuse but from what I've READ the relay is only to connect our battery to a trailer battery for charging when the ignition is on, and the fuse is for over current protection in case something goes wrong charging the trailer battery. Other folks on other ford forums say neither has anything to do with powering/ operating electric brakes on trailers.

Hoverp said:

Looks like they were not used. Now I have to figure out how to wire them into the 7 way .

Click to expand...

Check out etrailer they have good guides for this.

Roger that,

Thanks!