I've been out at my S1 today trying to get to the bottom of the boost problem(only making 4 psi) any way i've notived the amal isn't working(no click) but when i connect up to a battery it works,well i have tested the wires with a multi meter and i'm getting a 12v supply when the car is running but there doesn't appear to be anything happening with the other wire,i assume this is just an earth and if so can i just make up an other wire and earth at some other point i.e the battery
Cheers Guys