View Full Version : Push start button wiring

10-16-2013, 10:01 PM
Ok before I get flamed let me say I hate push start buttons, but my car came with no keys and for me to get a new key I need proof of insurance and registration in my name and this is a drift car project so I'm not to worried about it.

I have did some researching and found the typical wiring for these to be installed, but they still need a key to be turned to the on position. This poses a problem as I have no keys so does anyone know the wires I would need to splice into to bypass that all together?

Thanks for the help.

10-16-2013, 10:15 PM
details would be helpful... S13? S14? year? auto? manual?

10-16-2013, 10:24 PM
Oh sorry my bad late night for me, it's a 1990 240sx with a 5spd ka24e in it.

10-16-2013, 10:36 PM

10-16-2013, 10:38 PM
Looking at the FSM for a 95 s14...

6 wires in harness that connects to ignition switch.

W(pin 1) is the connected to the battery.
W/L(pin 2) controls accessory power
B/W(pin 6) and B/Y(pin 5) connect to push button for starting if you have factory security
B/W(pin 5) connects to push button for starting if you do not have factory security
B/R(pin 3) is the ignition power
W(pin 4) allows the A/C and heater to work.

So basically hook pin 1 to one side of a momentary button, and hook pins 5 and 6 up to the other side.

Then hook up a DPST switch up. both commons to pin 1, then one pole's on position to pin 2, the other pole's on position to pin 3.

If you need the AC and heat to work, then wire up a second SPST switch with pin 1 common and pin 4 to the on position.

Then to start the car, you flip the DPST to on, press and hold the momentary switch until the engine is running, then flip the SPST switch. To kill the engine, flip off the DPST switch.

edit: I know it's not what you need. I just got bored and did the write up for what I had. It should be fairly close, just have to find the correct wires for your model. The momentary and DPST will be the same.

10-16-2013, 10:44 PM
Looking at the chart Gutti posted

Pin 1: power
Pin 2: Acc
Pin 3: Ignition
Pin 4 and 5: starter

10-16-2013, 10:46 PM
Thanks man great write up, I have a friend who's great with electrical so I will show him those instructions and I'm sure me and him can figure out its pin out.

10-18-2013, 06:49 AM
Will this also work on a z32?