Many thanks for the information on the aux.pump and especially the lock issue, I will persue that with MB.

Now, Is there any way to aim the fog lights? Right side is great, but left is high and I can not seem to determine how to lower it. Both low and high beam on that lamp are fine.

Many thanks again.

There should be a way inside the lamp assy to lower the aiming of the lamp.

mark- are you refering to the "hella 500" bumper mounted fogs?

if so all you need is a 13mm wrench to loosen the nut just behind the light. then adjust it up or down to match your other one.

what kind of bulbs and what wattage are you running in your fogs?

peter