Zd30 inj pump edc problems

Hi all,
I need some suggestions on an issue ive come accross on my patrol.
So I changed the injector pump and all was well.
I then decided to install a second hand dpchip, it looked as thought the wires going to the pump were spliced but its a super thin coaxual wire... I mixed them up and fried the pump edc, and blew a fuse.
So i changed the edc over with one off the old pump... ( it had a mechanical fault b4 you ask).
Primed up, changed fuse and still wouldnt start. But it very breifly kicked first go then nothing.
The dpchip is no longer wired in at all.
I tried priming the injecters but there was no fuel being pumped whatso ever.
Im at a loss, I did however do things slightly differently when removing the edc. Every1 seems to cut the black wires and unscrew the hall effect sensor. I removed the sealant from the terminals, carefully broke the spot welds holding the wires to the terminals and unsoldered the ribbon cable. When refitting i resoldered the ribbon cable and the wire to the terminals and resealed terminals....
Anyways Im really hoping some onw has done this already and knows what I need to do.
Thanks.