Ok guys kinda stumped with my dc2r fuel pump atm, basicaly my fuel pump was acting up so i decided to change it. Firstly the car already had a walbro one, i just purchased a bosch one and when i put it in the car does not start, it can hear it working when i click reds though. When i put the walbro one back in it starts, so my question is... is there some kind of wiring done to put the walbro one initialy in order to make it work that i must change?

My mechanic mate is stumped too so any help would be appreciated