or if you’re feeling flush you could buy one here
del949:
They used to come standard with Mercs.
I guess if you ask any fleet driver with a Merc,he will have one in his kit and never use it.
they still do,and a nice flashy light thing that you are ment to put behind your truck to warn others when you have broken down,which with the axors we have got is quite often. 
busy fool:
anyone know where i can get a truck tyre inflator that works off your air tanks or air line connection.
i used to have one in my cab but its dissapeared, tried looking on ebay done a google search but cant seem to find one anywhere. maybe they dont make/sell them anymore any help appreciated
thanks
john
Got 2 of them ,what on Ebay lying in the workshop, feeling generous today, PM me your address and i will send you 1 for free
Geoff