The easiest ignition wire in the engine bay is from the EGR solenoid (brown/orange)
Fitted my pump last Friday but i have some problems with it.
After some time the fuel is returning back to the tank and I have to crank longer
The pump needs over 15sec longer, after the glow plugs light switches off, to restore the right fuel pressure, then I have no starting problems
So resuming I have to wait 30sec to be able to start normal
I' fitted a aftermarket returning valve but with no success
The valve is working because I have tested it before installing.
Have you also this problem with the long waiting period ?