Because the ignition on a 76 cluman is hard to come by and they are expensive. Plus the way I want to do it will make the car more secure 

Just curious. Why not just replace the ignition key barrel?

To add to upCake's original wiring suggestion: if you have a light green + white trace, on a 76 it should be there to feed the radio. That would be the "accessory" position, where accessories are energized but not the coil.

Interesting. I measured the resistance of a knock-off round (push button) solenoid and got 2.2 ohm which equates to close to a 6 amp draw.

Me neither ("either?"), so I looked it up and was surprised to find that most starter solenoids draw something like 10amps. That is right up there with some of the other high current draw stuff like horns, headlights, brake lamps, aux driving/fog lights.

Definitely a decent idea to use a relay to protect the switch. Norm

FYI: on my car I measured the following, and put in a relay for each one when I re-wired the car Horns (big wind tone Lucas horns) = 21A Fog light = 3.7A Low Beams = 2.3A High beams + driving light = 11A Stop lamps = 3A Starter solenoid = 10A (or there-abouts)

The way I propose will allow you to turn the motor over without it starting if the ignition toggle switch is off. You could also run all the wires to the toggle switch and put the button between the toggle switch and the end of the white/red wire. This way nothing works unless you turn on the toggle switch. Maybe follow MMs advice and use a relay if the button is low amperage. I don't know how much current the starter solenoid draws.

Agreed. I'm just thinking about most of the Autozone ane eBay specials I have seen. And I'm doubtful they are built to handle any type of high amp loads. 

I've never measured the amps drawn through my ignition, but I know they are the biggest gauge wires on the car aside from the battery cable itself. Judging from that alone, I personally would either use a relay, invest in a high amp push button and switch (not autozone or ebay), or carry a charged fire extinguisher. 

This is my opinion.

The starter button will 'activate' the starter solenoid just like the original switch.

Sage advice, CC. I personally would have a relay in that system as well. No telling if that switch is rated to hold the amps necessary to start the car. And even if it was, a relay is still a good idea.

Thank you

Attach the white/red wire (starter solenoid wire) to one side of the starter button. Attach a parallel take-off wire from the brown/blue (power in wire) to the other terminal of the starter button. Attach the brown/blue wire to the input terminal of the toggle switch. Attach the other two wires (both white) to the switched side of the toggle switch.

Hi

hope someone can help. I have a 1976 mini clubman and the previous owner decided to take a hammer to the ignition barrel after he snapped the key. What I'd like to now do is install a flip switch for the ignition and push button to start. Can anyone help with as much detail as possible maybe even a diagram. I know there are 4 wires on the ignition switch I just need to know what I need and how to wire it all up so that I can remove the damaged barrel 

regards 

Kyle