I've had a problem since doing my L28 swap early last year, the ignition would occasionally not turn the starter. The problem has got progressively worse until now, I can't get it to turn at all.
Shorting across the terminals will engage the solenoid and spin the starter, so the fault must be wiring.
I've checked both ignition interlock fuses, and they're good. The interlock currently doesn't even exist, as the trans in the car doesn't have a spot for one. I pulled the switch and taped off the terminals for it during the swap. While we(auxilary and I) had the original problem getting the starter to turn during the swap, we tried with the terminals connected to each other and apart to no avail.
Putting the ignition into ACC mode will engage a relay somewhere up under the dash, I can hear it click. Putting the ignition in START would up until now usually get a second relay click, although it was spotty. The second click usually coincided with the starter turning.
At some point in this car's life, it seems the ignition had the usual issues with weak signal to the starter, and someone put in a relay underhood. It was working until the swap, when we found that directly connecting the starter wire - instead of sending it through the relay - would turn the starter fairly reliably.
I get nothing from the car now, no second relay click, no starter turn.
Is there a way to simply bypass everything, wire the ignition switch directly to the starter, and have it work that way? I'd use a relay to prevent burning out the switch.