This was originally posted in the FWD section a while back. I have thrown all the ideas that were posted in there and discussed into one simple post so people wont have to go through the numerous pages to find the info they want.
DISCLAIMER: I ACCEPT NO RESPONSIBILITY FOR WHAT YOU DO OR WHAT HAPPENS TO YOUR CAR. DO THIS AT YOUR OWN RISK. I HAVE YET TO FIND ANY PROBLEMS WITH DOING THIS MODIFICATION. PM ME FOR QUESTIONS OR PROBLEMS YOU HAVE RUN INTO. AIM: hngryhngryhpps
1. Locate the Ignition wires under the dash. It is a blue and white connector and looks hard to take apart.
2. Find the White wire (Battery 12v)
3. Find the Black w/ yellow stripe (Start)
4. Splice wires into both of those wires.
5. Put the key in the "On" position and touch the wires together (i got a thrill at this point and felt like a theif) to make sure that you have good enough contacts on the splice.
This is for hooking it up to the ECS button because I know most of everyone here has changed their suspension and doesnt use the ECS button anymore, therefore leaving ECS to stand for Electric Controlled Start.
6. Take out the screws that hold the front bezel in place and pull it out.
7. Unplug the connector that hooks into the ECS switch.
8. CUT, do not leave attached (we dont want power running back down the wires), the red and black wire that are on the bottom of the connector.
9. Connect the wires that are running to the ignition wires to the red and black wires.
10. Put it all back together, put the key in the "On" position, and push the button to start the car.
Defroster Switch wires: top black wire and the blue w/ red stripe
Here is a list of all the wires that are used in what position the key is in. This is for the wiring harness coming from the ignition cylinder. All wires connect to the Battery wire (White).
Wires used in the ACC position
Wires used in the ON position
2. Blue w/ Black stripe
3. Black w/ White stripe
Wires used in the START position
1. Black w/ Yellow stripe
If you want to take the key cylinder out and wire up two switches, you would have to have a flip switch or a push button that had an on and off pistion. These switches would be wired to the ON position to Battery (White wire). One side of the switch would have the Blue, Blue w/ Black stripe, and the Black w/ White stripe wired together. The other side of the switch would be Battery (White).
Then you need a switch that is momentary on. There are spring loaded flip switches and there are also push buttons like the ECS button. You would wire one side of the switch to Black w/ Yellow Stripe and the other side to Battery.
This is a cleaned up version with all the thoughts and ideas from the first one thrown together to make one easy read. Enjoy.
Another Helpful Write Up -- Written by HotelKilo06
Awesome! I just finished and it works perfectly! I decided to go with the black/yellow wire so that when you put the key to ACC it will still play music and appear normal. Also the white wire is a thicker gauge than my tap in connectors would allow. Below are pictures from how I did it that should help in either way you decide to do this.
I took off the steering column cover to see if thatís where everything could splice into but I found out that I was wrong in doing this. Plus it made the whole thing a lot harder to do, so I wouldnít recommend doing it. I have pictures of where the wires are so you can see them.
The only piece you need to take off of the whole dash assembly is the bezel where the buttons are located. I found the harness to be right under the knee protector and behind the foot air duct. It was hard to see at first because there was so much electrical tape around the wires I wasnít sure if I found the right piece or not.
The arrow shows where the wires go into the ignition.
The line shows the path of the wires
Obviously where it says vent is the duct for the air to your feet. The big metal cylinder is for the steering whatever.
Here is where I spliced. Everything tucked back quite nicely
Ok this shows where I put the wires into the plastic thing for the splice. The little red and yellow thing shows how I got the wire to stay in the connector.
This is the complicated part for me, now simple for you, well if you donít already have wires to tap into on this thing.
The yellow line shows where the connectors go to. The prongs on the left are for the top button, and right for the bottom. Hereís how the complete a circuit.
1 and 2 turn on the light for the defroster. (Little one up top of button)
1 and 3 turn on when the button is pushed in (I donít know why, itís just how it works)
4 and 5 also turn on when the button is in
6 and 7 turn on the main light for the switch (one light for both buttons)
8 and 10 turn on when the button is OUT
9 and 10 turn on when the button is IN
I tested this with a 9V and a little light bulb. Bulb comes on, circuit is made. Thatís about it.
It took me probably bout an hour to finish because I wasnít too sure about everything. I could probably do it again now within 30 minutes.
I would suggest these items to use in doing this. Wire cutters, wire strippers, flashlight (one of the most important ones), wire taps (1.99 at RadioShack), and extra wire obviously, needle nose and regular pliers, and a set of screw drivers. I found it easier to get the bezel off with a flat head or 2.