Ok I hope this makes sense, I am putting those 3 white wires onto the ignition switch on an original 1958 ignition and there really is not any room for all 3 wires. So, I am thinking why not hook the one white from the ignition warning light onto white wire side of the push start. It looks to me as soon as the key is turned the post on the push start will get hot and light the light, and it should not make any difference. Then I would 2 white wires on the key and 2 whites on the push switch rather than 3 on the key and 1 on the push start.