Trailer Brake Controller Installation - 2004 Ford F-350 Super Duty

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How to Install the Trailer Brake Controller on a 2004 Ford F-350 Super Duty


Today on our 2004 Ford F350, we'll be installing the Tekonsha Primus IQ Trailer Brake Controller, part number TK90160. Now, during our installation, we'll also be using the Tekonsha plug-in wiring adapter for electric brake controllers for Fords, Lincolns, and Mercurys, part number 3035-P. We'll begin here by removing this cover right here. To do this, there's four little tabs that we'll twist and they'll pop out, and then we'll be able to remove the whole cover. Go ahead and set the cover aside for now. Now this right here is the factory plug that we'll be tying in the adapter plug to, the 3035-P plug. Now we'll go ahead and route our plug up from the underside here, and we'll go ahead and line it up with our gray factory plug. Once we're lined up, we'll go ahead and firmly push it in place, making sure that the little locking tab on the side here secures on the locking edge.

Now that our wiring harness is in place, we'll need to secure our brake controller somewhere on the lower part of the dash. Now, we're going to go ahead and take our plastic quick release style mount, and that's what we're going to use to install our brake controller. Right here in this little pocket area is a good spot to put it. We've made sure that there's nothing behind it that can be damaged when we put our two screws in. Now that we've done that, we'll go ahead and take our bracket and our two little screws, and we'll secure the bracket to the lower portion of the dash. Now that our bracket is secure, we'll go ahead take the end of the plug and connect it to the back side of the brake controller. You'll notice that there's a little locking tab here that goes on the top side, catches right here on this little lip, so we'll go ahead and take that and slide it into position.

See it clicked over the locking tab as soon as we plugged it in. We not have power, showing an NC, which means that there's no trailer connected. Now that we have that done, we'll go ahead and slide our controller into the bracket. Now that our controller's in the bracket, all that's left to do is take a couple zip ties and secure up any excess wiring. With that done, we'll go ahead and trim off any excess zip tie to clean up our install look. Now all that's left to do is put our front panel back into position.

Let's go over a few features on our brake controller. This slide here is the manual override. This round knob here is the power adjustment, and this button up here is the boost feature button, or the button that sets how fast the brake controller comes on or how aggressive the brake controller applies the brakes. Now as you can see, with our trailer plugged in, we get a C that reads out on the display screen. Now when we take our manual override slide, move it over, gives you a number which shows you the amount of power going back to the brakes. Now if you adjust the knob here on the side, you can turn it up or down for the maximum amount of power.

You just step on the brakes. Since it is an inertia style, it comes up 00, as no power is going back to the trailer brakes, since the vehicle is not moving. That's all there is to it to installing the Tekonsha Primus IQ Brake Controller, part number TK90160, on our 2004 Ford F350. .


Questions and Comments about this Video

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kita 05/05/2014

hi i have a 2004 f250 super duty crew 4x4 i have a controller and a pig tail. i notices under the dash to the left was a harness for brake wires. to the right is the easy connect. it is easy best to use the easy connect to butt in the the wire harness? do i need to add fuses or relys? 3974

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Rachael H 05/12/2014

My recommendation would be to use the quick connection point for your brake controller. You will use your pigtail and it will be a direct plug in application for your brake controller. Since the truck is set up with the quick connection point you will not need to add any fuses or relays. 3037




Info for these parts were:

Test Fit:
Joe V
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Zack K
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Andrew K
Installed by:
Jeff D
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Joshua S
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Nicholas E
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Jacob T
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Andrew L
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Kathleen M
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Mike H
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Dustin K
Installed by:
Cole B
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Shane T
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Alan C
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Randy B
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Shane H
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Joe B
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Jacob H

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