Greddy turbo timer problem

[slow92]

I bought a greddy FAT turbo timer and had to hardwire it, 92 240sx coupe, because the previous owner cut off the pig tail. I used a volt-a-meter to check all five wires running to the ignition at every single position of the key in order to find out which one was the constant 12v, acc 12v, and the ignition 12v.

I started the car and everything seemed to work fine but the turbo timer will not keep the car running. It accumulates time as I drive and as long as I don't remove the key than it will count down, but it will turn off when I remove the key.

Any and all advice would be helpful.