I've had to wire push button starts in both my 77 and 83 Z's. My electrical knowledge is minimal and I had no trouble cobbling together a working system from individual components.
Here's what you'll need:
- Momentary switch
- 4 pin relay & pigtail
- Constant fused 12v+
- Wire & spade terminal to fit the starter solenoid, ring terminal for ground.
- Soldering iron etc. to make some splice connections.
Chose a location for your starter button. In my 77 I used a knockout in the center console about the hazzard light switch. I brought the knockout with me to the electronics store to size up a button that fits. Also, find a location for the relay. I put mine in the passenger footwell bolted to the inside of the firewall.
You'll need to find an accessory wire to trip the relay when the key is in the "on" position. To do this, ground the negative probe on the multi-meter, turn the key to the "on" position, and make sure everything is turned off (wipers, HVAC, headlights, etc, otherwise you risk wiring your starter to another accessory, ask me how I know ). Unplug connectors at the column and check the pins (on the chassis side of the harness) for battery voltage. You should find several, mark the wires coming of them. Now take the key out and see which no longer has power. Voila, you have your switched power. You'll need to splice into that wire, what I like to do is snip it, strip the insulation, and twist a 3rd wire into that, solder and seal. Run this wire to the 86 Pin on the relay
Next you'll need constant fused 12V power. You can go straight from the battery with an inline fuse, take it from the stock or added fuse panel. Connect this to the 30 pin on the relay.
Now find a female spade terminal that fits the starter solenoid terminal snugly. Run this through the firewall grommet, to one of the starter switch terminals. Then connect the other terminal to the 87 pin of the relay.
Now ground the 85 pin of the relay.
If all is done right, nothing should happen with the key out and the button pushed. Now turn the key to the on position, push the button, and the car should jump to life. I've attached a quick MS Paint wiring diagram of how it should look.
Starter Wiring.png 8.45KB
DISCLAIMER: This is all off the top of my head and I'm not a trained professional. Use your own judgement or seek the approval of more knowledgeable hybridzedders before proceeding!
Also, I believe there's more than one way of wiring a relay to accomplish this same task. This is how I recall doing it.
Edited by m1ghtymaxXx, 01 September 2015 - 04:07 AM.