How did you access the main wires, at the ignition switch?
I used a couple T harnesses on my two 1998 Explorers, they are great!
Sad thing is I couldn't find them this time around, couldn't find one for my 2004 Ex either.
Pep Boys used to have them in stock, on the shelf. LOL. Man have times changed.
I took the connector cover off the back, the terminal lock off the face, slid a pin down the hole to unlock the terminal and pulled them out one at a time to solder to them.
I use a wire stripper to cut the insulation at two places and a razor blade to slice the insulation long ways, them pull that piece of insulation off.
Then I wrap the wire to be added around the clean uncut copper, then solder it with a 230 watt soldering iron.
After that I slip heat shrink around the wires from the terminal end (the reason I remove terminals from connectors) and push it up to the solder connection and heat it up with a grill lighter to shrink it. Sometimes I add a little electrical tape too.
The picture of the ignition switch is with all the wires added already, if you look close at one end you will see one wire with heat shrink sticking out.
All the others are hidden really well, and protected by that plastic back cover.
I am really very finicky when it comes to installing remote starts because I want to install them once and not have to mess with them again.
My two 1998's have about 10 years on them, no problems.
I am still working on the install, 3 days into it so far. May finish this weekend. LOL