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2020 Subaru Ascent
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Discussion Starter · #1 ·
I need brake controller mounting ideas or photos of where you guys mounted yours. Thank you for the assist. I have a Primus IQ from Tekonsha.
 

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I mounted my Tekonsha Prodigy 3 on the fuse compartment cover by my left knee. The dealership sold me an extra one for a little less than $5, which is the one I mounted the controller's bracket on, then when I tow I swap out the stock one with the one with the bracket mounted on it, pop in the brake controller, hook up the harness I keep coiled about three inches away behind the lower edge of the dash, and I'm ready to tow. Worked fine for over 5,000 towing miles last year.
 

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I also used the fuse panel cover for our Prodigy 3 (similar form factor to your Primus IQ). I was a little worried it'd be too heavy for the fuse panel cover, but it has held up fine over a couple thousand miles of mountain and some dirt road towing. Easy access to the manual trailer brake lever, although haven't needed it.
 

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Discussion Starter · #4 ·
Thank you for your suggestions. I am going to the dealer in the morning and getting a fuse cover. 2 more questions. Did your factory installed hitch come with the Tongue? Also since we cannot use a Weight Distribution Hitch, has sway been an issue. I have a KZ Classic 180BH. It does have trailer brakes of course.
 

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I tow a Jayco Jayflight SLX7 154BH Baja Edition. The ball hitch that comes with the OEM hitch has a 6" drop, perfect for many trailers that need a ball at around 18", but my trailer sits too high for that so I bought one with a 2" drop and a 7.5" long shank to ensure the tailgate would clear the jack handle when opening and closing. With a 2" drop the trailer sits with just a slight nose-down attitude and pulls great with sway never being an issue, but I load as much as I can behind the single axle and keep the tongue weight to around 365lbs.
 

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2019 Ascent Touring (CWP)
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Previous discussion in the Towing forum area will also be helpful to you
 
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I mounted my Tekonsha Prodigy 3 on the fuse compartment cover by my left knee. The dealership sold me an extra one for a little less than $5, which is the one I mounted the controller's bracket on, then when I tow I swap out the stock one with the one with the bracket mounted on it, pop in the brake controller, hook up the harness I keep coiled about three inches away behind the lower edge of the dash, and I'm ready to tow. Worked fine for over 5,000 towing miles last year.
PHOTOS please?
 

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PHOTOS please?
Here are two photos. The first is with the brake controller mounted on the fuse compartment cover and ready for use. I place an eight inch or so piece of blue painter's tape across the top edge of the cover as added insurance that should the car hit a significant bump in the road that the cover, with the brake controller mounted, doesn't accidentally pop open, something it's never done, but it makes me feel better. The second photo merely shows my two covers side by side.
 

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Yeah. The controller has accelerometers and senses deceleration so if it comes loose and changed orientation or falls off it can actuate the brakes or otherwise mess up braking.
 

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Here are two photos. The first is with the brake controller mounted on the fuse compartment cover and ready for use. I place an eight inch or so piece of blue painter's tape across the top edge of the cover as added insurance that should the car hit a significant bump in the road that the cover, with the brake controller mounted, doesn't accidentally pop open, something it's never done, but it makes me feel better. The second photo merely shows my two covers side by side.
I did the same thing with our P3- 2 fuse covers swapping them out when not towing. I mounted the controller low on the fuse box cover to lessen the weight pulling on the cover during a bump. No tape and it hasn't fallen out yet. Of note on occasion one of the clips that snaps the cover into place will come dislodged when swapping covers.
 

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What’s the reason for removing power to the controller when not towing?
It gets the controller out of the way with daily driving. There is no worry about possibly brushing into it on a daily basis (though it's really out of the way for us in the Ascent). And with the bumpy streets in town I don't have to worry about the fuse door randomly opening.

We had an Outback with it mounted in a similar spot and left it there because I screwed the door closed so it wouldn't keep falling open. On occasion we'd bump a leg into it.
 

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It gets the controller out of the way with daily driving. There is no worry about possibly brushing into it on a daily basis (though it's really out of the way for us in the Ascent). And with the bumpy streets in town I don't have to worry about the fuse door randomly opening.

We had an Outback with it mounted in a similar spot and left it there because I screwed the door closed so it wouldn't keep falling open. On occasion we'd bump a leg into it.
Thats understandable and the main reason I didnt mount mine near the fuse box. I put it in the cubby below the head unit and just leave it on
 

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Thus far it hasn't popped open on its own. The latching mechanism on the fuse door is so much better than our OBXT. I want to be able to manually apply the trailer brakes in a pinch and thought the space below the HU was too tight for that. To each their own eh?
 

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I want to be able to manually apply the trailer brakes in a pinch and thought the space below the HU was too tight for that. To each their own eh?
In case you get bored and want to tinker again...
If the controller is mounted with the included hardware so that the back is down and the front is angled upward, there’s plenty of room to operate the manual lever on the P3 in the cubby below the head unit. Just some food for thought.
Just like in this basic tool kit thread I prefer to just set it and forget it so it’s ready when I need it.
 

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I mounted my Tekonsha P3 at the fuse panel opening. It’s a “permanent” mount, and its blocks access to the fuses. But I’m using wing-nuts and screws that I can pretty quickly remove if I do have to reach the fuses. I can’t remember the last time I needed to access my fuses there so I think it’s a good trade off. Half of the Tekonsha and all the wiring is hiddenin the fuse well area. I’m using an unused Ikea aluminum shelf bracket bent at 115 degrees. (I’m sure a wide bracket or aluminum plate from HomeDepot would work too.) I then drilled some holes on the bracket, drilled a couple small holes under the fuse panel opening, and put it all together. I find it looks good and stays pretty much out of the way. Here are some photos.
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Drilled a couple holes under the fuse access opening.

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Here’s what it looks like mounted and screwed on. What you can’t see here are the washers, split washers, and wing nuts I used in the back-side. I used wing nuts so it’s easier to reach under and “grab” still for removal if I need to in the future.
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From the driver’s seat I don’t see the metal bracket and it looks pretty good.
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I now keep the fuse access cover in my glove box, in case I ever want to put it back in the future.

Edit: sorry the images are rotate 90 degrees. Doesn't seem to be an easy way to fix that here.
 

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Hello all - I'm new to the forum..2021 Ascent and just got the Hitch from the dealer. Havent installed it yet, and was nosing around to see about where to mount a controller and found this under by the fuse box...anyone know what this is used to mount? Thanks! Trunk Automotive tire Vehicle door Automotive lighting Gas
 

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Hello all - I'm new to the forum..2021 Ascent and just got the Hitch from the dealer. Havent installed it yet, and was nosing around to see about where to mount a controller and found this under by the fuse box...anyone know what this is used to mount? Thanks! View attachment 13169
It's not a mounting point, but, you can use it for anything you want. It's a blank opening for the interior footwell ambient lighting in the Touring models.
 

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Hi! With Tekonsha Prodigy P3 and factory tow wiring on Ascent it is just plug ang go, right? And just put a few screws to mount it. No need for any additional wiring, only the wiring that comes with controller and the car, right?
 
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