Well finally got this project done and it came out great!
Further investigation revealed that above the door handle there is a second layer of metal in the door that is there to stiffen it up I guess so mounting above the door handle is out.
Wiring: I found constant 12 volt power (orange wire) in the door in one of the plugs (only 3 wire plug) going into the doors switch module and a ground in the same plug (black) these are the main feeds for this switch module as they are of very large (relatively) wire. So to the orange H2 wire connected the red power wire from the Essex KE-1601 keypad and the red power wire from the MULTIDL Databus Module. Then grounded the keypad, MULTIDL, and the programming switch from the Keypad into the black wire. For the lock command the White/Black wire from the keypad connected straight to the Green wire on the MULTIDL. For the unlock command I connected two wires from the keypad, the white/red (unlock) and the violet (auxiliary output), to the blue wire of the MULTIDL. This two wire hookup allows the drivers door to unlock when the right code is entered then withing about 10 seconds if you hit the 3/4 button it unlocks all the other doors on the H2. This is sort of like the second button press with the key FOB. Next the yellow programming wire from the keypad is connected to its push button switch. At this point he MULTIDL is plugged in and powered but you have to save the purple wire for the last connection. This purple wire from the MULTIDL goes to another purple wire on the OBDII connector (Pin #2) under the dash right by the hood release. This was the only tricky part getting this wire through the door boot. But a hanger bent straight went right through the boot into the interior with a little wiggling. Then taped a length of wire connected into the purple wire on the ORDII plug onto the end of the hanger and pulled it through to the door. Then connected it to the purple wire of the MULTIDL. All other wires on the MULTIDL were removed from the harness as we would not need them (mostly stuff for remote start features and alarms). Also many of the wires from the keypad were cut off close to the keypad to keep the harness thin. You really only have to tap into 3 wires on the H2 (power, ground, OBDII) to get this thing to work.
I put the MULTIDL and the keypad programming button high on the harness so they would be accessible just by popping out the drivers door power window switch module. Although you once you program this stuff initially you should not need to for a long time. There was plenty of room in the door panel for this extra stuff. The keypad wiring followed the existing wire harness along the lower part of the door then into the latch area and up to the area beneath the door handle. Here is an upside down picture of it mounted up in the door:
I added some wire loom to the harness for protection
Mounting: First I put some masking tape on the door, found the center of the handle and laid out the template that came with the keypad. Measured about 1.25 inches down from the bottom of the door handle, that looked about right. Clear taped the template to the masking tape and used a center punch to get the holes started. Then went with a very small bit to do a pilot hole. Then a 3/16 drill bit on the two outside holes for the mounting screws then drilled them all to 3/16 to get my step bit started. Then used a step bit to get out to the 9/16 size hole. De-burred the holes then used some waterproof grease on the exposed metal to prevent rust. I suppose you could also tape off and give it a shot of primer to protect it.
Template setup:
Then mounted it up and stuck on the number plate:
Programmed the keypad (real easy) and I was done! Now we can lock our keys in the H2 on a regular basis. On the ford keypads you press the last two buttons at the same time to lock all the doors from the keypad. With the Essex KE-1601 you have to enter code 557 or 559, a little different but we can get used to it.
Please feel free to email me if you have any further questions I will try to help if I can. And if anyone in Los Angeles area wants to this mod drop me a line and I can come walk you through it, or do it for you if you want.
Total cost:
Keypad - $203.75
A1 Electric
MULTIDL - $64.00
AutoAlarmPro.com
Total - $267.75
Took about 4 hours labor
Have Fun!!
Steve Walker
steve@capriceshop.com