[tricky]

I prefer the contact cleaner sold by Radio Shack or other electronic shops for computer keyboards. There are thin plastic pieces inside the switches that can melt if the contact cleaner is TOO strong. It's a good idea to have some compressed air handy…. the cans of air work good.

If I recall…. the hose was not supplied with the bike. I think it was available as an additional purchase.
Try this ebay link…..

http://www.ebay.com/itm/HONDA-GL180...Parts_Accessories&hash=item5d3614ce4b&vxp=mtr

The air hose was supplied as standard equipment on the Aspencade and Ltd editions.

 

[tricky]

My '85 Aspy came with the air hose, original owner's manual, leather wrapped Aspencade tool kit, and the original fitted Aspencade luggage bags . . .

Your one of the lucky ones

But of course it is the right color