Turns out I didn't read the instructions right (heh). It says to plug the charger in then set to "jump start" wait a couple minutes till it goes from "On" to "RdY" before cranking.
I had attempted cranking it when it said "On".
It says "For severely discharged batteries, it ...
You need to connect the wire on terminal 30 to the wire on terminal 51, that is assuming you have not replaced the wire to the generator. If you have then you need to connect the alternator to the battery positive with a with suitable for the current output of the alternator.
Then you need to find the ignition warning light wire and perhaps use the ...
Your immobilizer is active.
After flashing the replacement ECU with proper VIN and calibrations you need to also program the immobilizer to store the sync codes in the replacement ECU. It needs to be done while connected with your immobilizer module and key so can not be done remotely like your supplier did for flashing the VIN and calibrations.
Turn your ...
Check the alternator/generator and its connector wires, fusible links, relays, etc thoroughly.
If you are a technology savvy diyer check for proper working of the regulator/cut-out and diodes installed in the generator. Replacement of these components is not that costlier affair.
Best of luck!!
If jumping the terminals at the relay made the pump work, then there is no point in checking the wiring from the fuse box to the pump, since you have just proved that it is OK.
Things to try -
Swapping the relay with an identical one from your fusebox - This will test the pump relay in another circuit and also try a known good one in the pump relay circuit....