Driving lights -operation?

[thomas_sorrentino]

I'm in the process of trying to get my driving lights working. So far
I've figured out:
1.) the high beams have to be on
2.) the suspension has to be up
3.) one lens is clear the other is amber (is this normal)?
They won't swing down all the way without a little manual help.
On the air valve, there is a fitting that looks somewhat like a brake
bleeder fitting. What is the purpose of that? And is it adjustable?
When the switch is in position to put the lights down, air escapes from
it. When I cover the escaping air with my hand, the lights swing up.
And where do I buy a new one since I broke the old one?

Tom Sorrentino
1987 PT38
Bedford Hills, NY