Toyota FJ Cruiser Forum banner

1 - 6 of 6 Posts

1,846 Posts
Discussion Starter #1
Here is how I installed seat warmers in my factory seats. I used a kit from Sports Imports LTD that I found here- Universal 11" x 19" Carbon Fiber Heating Element Heated Seat Heater Kit - I saw where several other folks had used this kit with excellent results and I've also seen this kit used by dealers for "factory" upgrades. The kit is well put together and very simple to figure out.

Believe it or not, this is a rather easy mod that anyone should be able to do. It can be kinda nerve-racking at times, but nothing that is overly difficult.

**NOW IS A GOOD TIME TO DISCONNECT THE BATTERY** Let the truck set for a while after disconnecting the battery or batteries to dissipate the power out of the SRS system.

Here is the kit just out of the box:

and here are all the tools I used to do the mod:

I started off by building a tent over my open doors because apparently December is monsoon season in Indiana...:flame:

Removing in the seats is just 4 bolts each and some wire clips:

Slide the seat forward

Pop off the covers

All four bolts are 14 mm

-CAREFULLY- remove the wire clips. Mine all came off really easily

Both seats are put together the same way just mirrored obviously. The only difference was the wiring for the passenger SRS system. The driver's side has the knobs for the front and back hight adjustments. The front knob is held on by a "C" clip that just pushes off from the side and the large lever has two screws behind the cover plate.

First up, pop off the cover for the arm rest and remove the 14 mm bolt holding it on

Release the straps that hold down the lower flap to get access to back of the trim panels

Remove the two screws that hold on the side panels


1,846 Posts
Discussion Starter #2
Pull here assertively to pop out a hidden clip. Just pop it loose then pull the back side around the screw mount and then the panel comes off

The outer panel comes off the same way except there is another clip under the front of the panel. Slide the loose panel forward to free it from the clip.

Next, release all of the cover tension clips from around the edges. start at the back and release the four clips holding the cover to the cushion spring. Next, release the two side straps from the buttons and then the two side tension bars. Last, release the front edge by starting on the sides and pulling the long clip free from one side, around the front, to the other side.

This will allow the entire lower cushion and cover to be pulled off the frame.

Pull the cover up to reveal the hog rings holding the cover down into the listing of the cushion. Don't hesitate to bend the foam around so you can see the hog rings and cut them with wire cutters.

There are 12 hog rings holding the cover down to the lower foam.

Now, it's time to add in a warming pad. Lay the pad down on the foam and decide where you want the pad to set. I placed mine so the thermostat box was towards the rear of the seat so I wouldn't feel it when I sat down. Stuff the pad down into the groove and mark where to cut for the hog rings. Use the tape to cover the cut edges of the pad and set the pad -tape side down- onto the foam. Next, place the cover back onto the foam and replace the 2 hog rings locking the pad in between.

Peel away the tape backing and stick down the pad flat on the foam. Make sure there are no wrinkles or creases. The black lines are where the hog rings go back into the grooves

The back half of the pad is the same process, but I cut out a groove in the foam to allow the thermostat to set down flush with the foam. This way I won't feel the box when I sit down.

Peel the tape and stick the pad down then replace the rest of the hog rings working from the center out

Pull the cover over the foam edges and set the cushion aside


1,846 Posts
Discussion Starter #3
Moving to the back of the seat remove the three hog rings holding the front to the back under the lower flap you freed up earlier

Release the straps from the buttons and the zippers from the hog rings. Also, go ahead and cut the hog rings holding the black listing wires from the front side

Unzip both sides of the back cover and pull the cover out of the way

Flip the seat over and pull the cover up to the groove and cut the three hog rings holding the cover down. This is as far as you will need to go to remove the cover. The rest is all assembly

Follow the same process as before to align and place the pad, mark for your holes, and cover the cut edges. Make sure to peel and stick the top part of the pad

Set the three hog rings, cut the groove for the thermostat and wire, peel the tape and stick down the bottom half of the pad

Push the cover back down the front of the seat and stuff the pad wire and cover through to the back.

Pull and hog ring the listing wires back to the frame

Zip the back of the cover back up, tuck the zippers in, and pull the straps back over the buttons

Pull the pad wire through the access hole in the flap and hog ring the front and back panel together


1,846 Posts
Discussion Starter #4
Set the bottom cushion back onto the frame and, starting at the front edge, re-attach all of the clips to hold the cushion down. Start at the front edge and work to the sides, then set both of the long side tension clips and last pull the four black clips on the back and clip them on the spring. Don't forget to pull the straps back over the buttons on each side.

Replacement of the trim panels in the reverse of the tear down. Don't forget about sliding the outside panel on from the front first then work to the back

Once the panel are back in place, screw them back down and re-attach the straps for the lower panel to the bottom of the seat.

I decided to do all of my under dash wiring before I put the seats back in so I had room to lay down and get under the dash. I assembled the wiring harnesses in some wire loom just in case it was ever seen it would look factory. Everything will go under the seat except the wires for the switch and the power leads. (these were placed in the loom)

...and zip tied the harness neatly and securely to the bottom of each seat.

There is enough play in the lower half of the console to just stuff the wire harness under it, but I don't work that way. I chose to drill through the console where it would be hidden by the seat

Hooked all of the factory wires back up to the seat, stuffed the loom from the warmers into the hole in the console and bolted the seat down

I have a Blue Sea fuse block under the dash that is connected to switched power and it just happened to have two open fuse slots. I pulled two power leads and a ground wire from the fuse panel to the console to join with the power leads to the seat warmers. I now have power and ground to each seat but no switches yet.

I decided to place my switches on the console between the two cup holders. If you have an automatic, you may want to move the switches somewhere else. Bandi has a nice write up on how to put them in the radio panel in the dash here- http:// -.

So, I lay'd out where I wanted to switches, drilled the holes, and pushed in the switches

Connect the switches to the harnesses pulled from under the seats and snap the console back down. The driver's side is on high and indicating red and the pass side is on low indicating green.

The pads get noticeably warm in just a couple of minutes. I'll give them a better test on the way to work monday morning but, so far, they seem pretty good.

The whole process took me most of the day (say about 9 to 6-ish), but I had no idea what I was getting into with the upholstery. The second seat went way faster than the first one. Once I got over the idea of taking apart the seat with all the airbags, clips, wires, rings, etc and just started working away, it went really smooth.

I did have to buy a set of hog ring pliers and some hog rings before I started ($35 from amazon). Everything else was done with simple hand tools.

2 Posts
Hey Midstate, do you still have the pictures from this mod? They seem to have disappeared from the page.

I'd really appreciate if you could repost them here, or PM them to me.
1 - 6 of 6 Posts