180 Glow plug voltages and code

ALH swap. I had to track down the wires for the glow plug relay.
After a lot of searching, it seems this is the correct wiring:

pin #1 is labeled "ST" - ECM pin 42 lilac
pin #2 Large pin -12v battery
pin #3 "31", ground
pin #4 and #6 are labeled "GP" - GP harness red/white stripe
pin #7 is labeled "D1" - ECM pin 33 green
pin *9 is labeled "86" -109 switched 12v

GP relay didn't click.
I keep getting code 17068 GP control module implausible signal

Plugs check out at .6 ohms each, but I don't think it's a resistance issue because it doesn't even try.

On "ST" with relay unplugged I have 3.5 volts. When the relay is plugged in I have 11 volts.

I've seen some posts of guys who have had similar problems, but never any solutions.

This is an 01 harness with a 038 906 012 N ECM. Pretty sure that's a 2 channel.

I'm stumped. Any help?

try a different relay

Somehow I forgot to mention I also tried a brand new relay from idparts. Exact same thing.

Solved. Plugged in a different ECM. Clicked right on.