Basically had my saph off the road for bit, the amal was working fine before but had 2 have the wireing loom behind the dash re-done and now have a problem.

basiacally theres a hi/low boost switch which replaces the live feed from the ECU to the amal with a new live and the switch in situ to turn on and off (how it was before he re-wired it all)

Now for some reason with the ignition on the amal will click, but as soon as the engines running it wont work.

The amal valve is fine as ive tested it plus i bridged the wires on the switch and its still the same so isnt the switch either

Any suggestions?!