1. Unbolt the seat. 4 nuts/bolts. You'll need 14mm wrench/ratchet
2. Disconnect the 3 (passenger) or 4 connectors (driver). Look carefully and patiently, there is a pulley that unlocks each one.
be careful and patient, this is the key to unlocking these.
3. Take the headrest out
4. Take the seat out. It won't stand on flat surface, since it has uneven legs, so use towels and place the legs on these, not to scratch anything.
5. Un-clap the fabric
6. Here fun begins - the task is to unlock the hook-style plastic long connectors:
7. Between the ends of the hooks insert a long metal strip. I used a hacksaw blade.
8. Once that is fully in, unsnap the connector that holds the backrest fabric together
9. Place the seat on the back and let the ripping begin.
10. Place your palm under the fabric. Your goal is to rip the fabric layer off the foam with minimal foam stuck to the fabric. By advancing your palm further, travel to the top of the middle line of the backrest, and make the cavity rectangular, so that you can fit the heating element in. It is hard, take your time. Patience is crucial.
I imagine this is how proctologists work.
11. Insert the heating element, once inserted, remove the adhesive paper slowly, stroking the fabric, so that the heating element's fabric is not wrinkled.
12. Once that is done, for the driver's seat you can assemble the backrest (the plastic hook-style strip). For the passenger, don't. It is easier to do the seat top.
13. Repeat steps 9-11 the passenger-side seat top.
14. Assemble the seat. For phase 1, clamp the backrest heating element wires to the standard seat top element of I-miev. For passenger seat - just attach the heating element's wires nicely, next to existing wiring.
Here the differences begin.
Phase 1: just the backrest heating element with standard wiring. - Just put the seat back, connect wiring, bolt it back to the car, put in plastic trim back. Note on the nuts, use low torque, don't over-do it.
Phase 2: Passenger seat. The challenge is to where to get the +. I took a look at the lightener's connector and was uninspired by the wiring's thickness. Having done it before, i decided to get the + from the battery.
To do that you need a whole to get inside the car through the "firewall". I just drilled a whole above the right front arch, and did put a plastic fastener in it, so that the wire has no chance of losing insulation and shortening to the firewall's -.
Then i soldered the following setup together: 14 avg wire + 15 amp breaker. Disconnected the 12 v battery. The breaker's wire was twisted in circle around the + bolt of the battery, and covered with solder. Then + is put on the same bolt, before the nut. The wire was fixed to existing points to minimize vibration and rattling. Don't connect the battery yet.
Funnel the wire through the hole. It will come out inside the car. My hole was though the insulation too.
Take off the glovebox. It is easy.
Get the wire. To the right you'll see the plastic cover, that covers the would-be switches. I used it to attach the turn-on switch for the passenger seat.
On the right side you'll see plenty of opportunities to get - for your wiring harness. A word of advice - cover your terminals with solder when you can, and solder everywhere. You'll have 10 amps, and bad wiring can get really hot if not soldered properly.
The switch i got was a bit smaller than the two plugs, so i did attach it to the cover.
Then take out the clips that hold the side door trim, and place the wiring under it.
Assemble and visually inspect the wiring. Connect the battery. Warm? - put the glove box back.
My light lights up when the seat heat is on. It has potential to kill the battery in ~3 hours if left on. That's why i like the light to turn on when the heat seat operates only.
At 5 it is really toasty. 2.5 and 3 are good keep-me-warm settings for ~freezing temperature.
Phase 3, is re-doing the wiring on the driver side, to use the 1-5 level switch. Have not got down to it yet.
So the conclusion is - i really was missing the backseat heater.
P.S. in the interest of full disclosure - the passenger airbag light now lights up and so does the passenger seat belt light. I might have forgotten to connect the weight sensor from the seat. In the worst case i screwed it up by tearing the fabric up from it. Not that i care too much now... But i'll take a look into that wiring/sensor... eventually....
