Roof spot light and airhorn question

JimInMich wrote:
Just purchased a 1987 GBM ( class A ). I noticed 2 items on the roof up front. #1, looks like a remote controlled spot light. I dont see where it could be controlled inside the cab. Any idea's on what to look for?

UPDATE: I found the spot light joystick and power switch! It was installed in front of the steering column, so when sitting in the drivers seat, you really don't notice it. Works wonderfully! Left/right/up/down and bright as heck!

Also, I see what looks like a nice set of air horns. I do have a rocker switch on the dash that reads " Horn ", but nothing. Any idea's?

Still trying to figure out the air horn......