I just did this installation last weekend (2001 Jeep Grand Cherokee)... it definitely took me longer than 1.5 hours but I managed to do it while I was sick
I bought the Avital 4013 and ExpressKit DBALL from SonicElectronix, I asked if they could load the firmware for the DBALL and they did (confirmed by using an XKLOADER2), without affecting my delivery date (awesome)
Things worth noting:
[*]I installed the Avital and DBALL behind the fuse box, I'm not thrilled with the location, it's tight... now that I've gone through the install, I would probably relocate to the center console area... would require a little more planning to get everything run/mounted there, but I think it could be cleaner then behind the fuse box[*]I did not ground PIN6 on the black 10-pin harness for the security system... this was not required per the DBALL Type 3 installation (which is for all Jeeps 99-04)... the stock security system functions properly[*]When using the remote starter the headlights will not come on until you press the brake to deactivate the Avital (key in ignition and on)... this caught me off-guard the first time I remote started at night[*]I would highly recommend installing a hood switch of some sort... unless you have the on/off toggle and trust that you'll always remember to turn it off when you're working on your vehicle... I installed a Directed 8601 magnetic switch... you have options... mechanical pin switch (hoodpin or doorpin), tilt switch, magnetic switch... keep in mind this switch should be Normally Closed... wire grey PIN4 on the 5-pin (H3, Remote Start) harness for the Avital 4013 to the switch then from the switch to ground
[*]I soldered almost all the connections, there were a few where I used a scotch-lok... I'll probably go back and solder the few connections I made with a scotch-lok[*]I soldered the ignition wires using the "Tap Soldering" method http://www.teamrocs.com/technical/pages/connections.htm
[*]I used scotch-lok's for: the tap on the OBDII connection, the tap on the headlight wire, one ground tap to the main ground on the Avital 4103[*]I made interior grounds to the lower-left bolt (13mm?) on the firewall for the steering wheel
Thanks to the original poster for making this cut-and-dry!! All the info is found in the Avital 4103 and DBALL install manuals... but that initial post is fantastic!!