Hey bud.ill throw my hat in the ring. I have a multimeter ive never used before. But ill give it a go. So behind the filter is a black and grey plug running verical on the manifold? What and where am I testing on the grey plug for ya?
thats the one, with the key in the on position
put the multimeter to 20vDC black probe onto battery neg
then probe all 6 please, the bottom right should be an earth so should read 0.00v
the rest will vary in voltage,
if you could report back with each read out from 1 - 6 starting from left going right would be great thanks