Introduction: Backseat USB Charger
After all the feedbacks, I've added these warnings:
1- do not attempt this if your car has side airbags imbedded in the seat
2- make sure your back seat has sufficient room, so the 12v adaptor is not poking your neck/back area.
3- add an inline fuse, if you see yourself using it a lot.
Finding myself having more ipod/pad & phone devices on the road, I needed more charging options in the car. Auto part store sell these multi-socket adaptors, but I like a cleaner solution with less wires showing.
- Female cigarette adaptor
- Power car seat with removable access panel, of cause.
- Socket wrench with extender.
- Any wiring that's rated for 12v or more.
- Terminal connectors or soldering iron
- Spiral cutting tool. I use my trusty RotoZip.
- volt meter
- A spacious, well lighted working area.
Step 1: Remove Car Seat
Pick the seat you want to hack and unbolt the floor railing. Disconnect all electrical wirings to it & move to a well lit working area.
While you're down there, *** Find ** which wire/leads are the hot one (see step 4) with multi meter.
Step 2: Remove Back Panel
Remove back panel. See if you have room to fit the cigarette adaptor in the seat cavity. You may need to remove some foam materials. I pick mine higher up, just below the head rest.
Step 3: Tap Into Existing Power Source.
Now the fun part: you need to find an existing source & tap into it. We picked the power seat motor just because the pin connectors were easier to remove.
You need to find which is the hot wire & match with existing lighter. We stupidly didn't do that back in step 2, and need to put the seat back, power it to to find the A/C leads. Live & learn.
Step 5: Test & Install.
Temporarily, connect everything & test for charging. Hopefully, everything should work & no shorts.
Install is the reverse process. Enjoy your new charger.