Hi,
I connected white wires from both drl's to no 10 on car lighting block, as per you pic. I extended the white wire to the offside drl with heavier cable than supplied, all i could find in the shed, could this cause a problem. I have tested all the connections with a meter and all seems ok. need to perhaps disconnect each drl in turn and see if one of the modules is faulty, what would your thoughts be?
Thanks again,
Paul