I'm going to install the Tekonsha P3 sometime next week, when I had it in my Jeep I had it mounted under the dash. Is this what you guys do most of the time?

Finally, anybody have photo of what the brake controller plug looks like on the Ford looks like? I want to confirm the truck is prewired.

 

I mounted mine under the dash in just about the only spot there is, its like it was made to be there. Kinda off to the right of the drivers leg under left of center.

I will almost guarantee that your truck is prewired, sorry no photo

 

I saw that spot when I was looking up under the dash looks like that is where it'll go. Good to hear it 's prewired...I'm going to spend the 15$ and pick up that prewired pigtail!

 

I mounted mine right above where the manual shift lever is for 4wd.

 

 

Ditto.............

 

I was just about ready to start cutting wires when I saw this pigtail up in the dash on my '02 which had the same number and color of wires as the "universal" pigtail Tekonsha gave me. When I ordered it they required info on my truck. Why in hell they don't give you the one that just plugs in is beyond me. So I ordered the plug in one and trashed the one that came with it. What a waste!

 

By the way, ditto on the controller location as Jason and Wlihntr.

 

Mine is by my left knee, under the headlight switch. My CB is where the wlihntr showed his controller. The only problem I have with it on the left is after my wife drives and doesn't move the seat back, my knee hits it on the way into the seet.

 

same problem as sawfish... I have my CB where Jason has his. I dont mind it there as as i can reach and see it with no problems, just not as convenient when you get into the truck

 

Mine is the same as RogueSpear.

 

Are there any fuses you have to add after you put the controller in? I have two maxi fuses under the hood that are labeled for trailer towing and there arent fuses installed. Its 16 (trailer tow batt charge) and 28 (trailer tow electronic brake controller).

EDIT: There are also two empty relay sockets in the little box attached to the fuse box. Are these the trailer charging relays and reverse light relays that are listed in the manual.

 

I didn't remember any fuses on the install so I looked at the wiring diagram that came with the Tekonsha. No fuses! guess it shares a fuse with something else or it's on the F350's stock fuse block. I'll go look but not today, it's already over 100 and it's Miller time.

It must be fused. Ford wouldn't have a standard pigtail set up for it and not have it fused.

 

Mine is in the little cubby above the 4wd shifter. I drilled a hole in the back of the cubby for the wiring, and pushed a plastic soda bottle cap in on top of it to hold it in place. Yeah, I know it's redneck, but it fit perfectly and hasn't moved in 3 years. I couldn't find any other use for the cubby, everything else I put in there falls out on the rough roads around here...

 

What you have listed should be all that you need. and yes the two empty sockets are for trailer charging and reverse lights. Some people don't like the relayed 12V charge. I guess on utility trailers and such the lights all run from the truck, no battery like on an RV. For that, you could simply make a jumper with male spade connectors, 10 awg wire or so, and plug it in. Each to their own. Me, i'd forget about it and end up with dead batteries becuase I left a light on in the trailer.