Starter kill switch By: rudeludenotmeanthough (Anthony) (From: http://www.preludepower.com/forums/showthread.php?t=201914) Well, you want to make a kill switch do ya? Well in this write up I’m going to tell you how to do just that on your 3g Lude (this can also be helpful information/instructions for all cars. However wiring colors may/will be different.) First off your going to need to remove the plastic which covers the steering column. There are four screws on the bottom which hold it together. Remove the four screws, and then carefully separate the two plastic pieces making sure NOT break the clips holding them together. Completely remove this from the column, and you should see the back of the Ignition switch. There will be several wires soldered to the back, however, we will only be using Black/Red (Blk/Rd) and Black/White (Blk/Wht). Blk/Wht is the wire which carries current to the starter solenoid. When you turn the key to the start position, +12v flows through this wire, and thus turns on the starter, starting the car. This is the ONLY wire which carries current to the starter. Blk/Rd is the ignition wire, this wire ONLY carries +12v when the key is in the ON, and START position. It is necessary to use this wire in order to give constant power to an active relay while starting the car. If you did not use this wire, when you turn the key to the start position, the relay would loose power, and the car will not start. You MUST use this wire. Now, parts which will be needed: Magnet Female Wire connectors Relay Reed switch (Home Alarm contacts work the EXACT same way, and are a little bit cheaper.) Wire, 12 gauge (Red, Black, Green) 12 Gauge butt connectors The Steering column cover (plastic) has already been removed. The following steps can be performed Outside of the car; at a work bench perhaps. !!DISCONNECT THE NEGATIVE(-) BATTERY CABLE!! 1. Cut TWO(2) Pieces of Red of wire which are about 5-6 inches long. Cut ONE(1) black wire, same length, and TWO(2) Green wires, same length. The length of these wires can be any size you wish, depending on where you wish to mount your relay. 2. Attach The female Wire connectors to one end of each wire. 3. Take the 2 Red wires with the Female connectors crimped on, and attach one RED wire to prong 87, and the other RED wire to prong 30 4. Take the Black wire, with the female connector crimped on, and attach it to prong 85 5. Finally, take the Green wire with the female connector crimped on, and attach it to prong 86. 6. Attach the GREEN wire from prong 86 to one prong coming from the Reed switch. Then take the Second GREEN wire, and attach it to the other prong coming from the reed switch. Now, let me explain this a little bit. The BLACK wire is going to provide power to the relay. It will carry +12v while the key is in the ON and START positions. It is part of a closed loop built into the relay which opens and closes the circuit. The GREEN wire is the GROUND for this closed circuit. The RED wire from prong 30 is a CONSTANT +12v while the key is in the ON and START position. The RED wire from prong 87 is the Output for the starter. It ONLY carries 12v when the Black wire is +12v and the Green wire rests at GROUND. Take your whole Relay/wiring harness out to the car….. 1. Find the Blk/Wht wire coming from the ignition switch. Cut this wire leaving plenty of room to reconnect it at a later date if desired. About 4 inches away from the ignition switched should be good enough. Take the RED wire coming from prong 87 on the relay, and use a butt connector to connect it to the Blk/Wht wire; the side of the wire which is NOT coming from the Ignition switch. 2. Next locate the Blk/Rd wire coming from the ignition switch. DO NOT CUT THIS WIRE. Strip the sheathing back to expose the wire strands inside. Attach the BLACK wire coming from prong 85 on the relay to this wire (Blk/Rd). After doing this, attach the RED wire coming from prong 30 on the relay to this wire (Blk/Rd). I would recommend soldering this connection, and then wrapping it with Electrical tape. 3. Take the GREEN wire, coming from the reed switch, and ground it somewhere on the body of the car. This needs to be a SOLID ground. If the ground ever fails, your car WILL NOT start. Now, Reconnect the batter cable and test the system. 1. Insert your key into the ignition, and turn it to the ON position. 2. Depress the clutch. 3. Now for the moment of truth; Pass the magnet over the Reed Switch. It should engage the starter and your car should start. If all goes well, and everything works, Mount the reed switch somewhere behind the dash, or in the Steering column assembly, and put everything back together. To start your car, pass the magnet over the area you installed/hid the reed switch. These directions are EXACTLY how I wired my system. I AM IN NO WAY RESPONSIBLE IF YOU MESS SOMETHING UP ON YOUR CAR USING THESE DIRECTIONS! There are MANY variations to this system, and I will be making Write-ups for them, hopefully tomorrow. Hope you all enjoyed reading this, and good luck if you decide to perform this project on your own Lude. Anthony, rudeludenotmeanthough