Crank Relay current, eg like this?
"At first I wired in the trigger from a Bosch 4 pin relay, about 80 ohms, it STARTED about one out of three times. The more resistance I added the more often it started. I grounded (yes, I was frustrated) the yellow/black wire and it fired up every time.

For goodness I wired in a 60 ohm resistor and it fires up 95% of the time."