Wet battery fitted so think my 13.5v should be enough and tried jumping from van for luck! Like the idea of some kind of protection killing the trigger feed. Will try to rig something up off a separate power supply directly to the starter with the cars wiring removed to do a bit more testing, not ...

Thanks for reply, should have put more info, sorry. Car is on a 13.5v power supply (and has new battery which has been coded as that was first thought). The power to the trigger only lasts a few seconds (monitored with a test light) then is no longer present, almost as if the car is sensing it ...

Hi guys. New here but hope someone can help. I have an 07 3.0d E70 which will not start. Press button and there is small click then nothing. Thought starter however on testing the trigger wire it gets power for a couple of seconds when pressing button then it loses it. Borrowed ista d from friend ...