Pto/blower/cruise problems

Are you refering to the switch that triggers the brake lights or the air switch for the parking brake. If the truck is running a high idol in park and i push in the tractor brake button it will cut off the idol, you think that could have a short?

 

Well which ever one it is i think its finally completly crapping out. Today i couldnt get it to stay on eather. If that dosent fix it ill fix it with a matchbook and some gasoline lol

 

I have a shop and its been in lol i keep up with the maintenience like clock work but i havent spent much time chasing this problem. Seems to only act up when the blower is under load. I can park the truck in the shop and set it at a high idol and itll stay there the entire day. My coustomers wouldnt be to happy if i messed with it while trying to pump off lol