I have a '78 Eagle 05 with an inoperable fast idle/jake brake switch... I've repaired the pin and microswitch cam assy, but still won't work. I'm told there's no need for the fast idle and just to replace this with a simple switch activated by the gov buffer. Have gone online to all the Jake brake installation and maintenance for the 71/92 series jakes on www.jakebrake.com
and have been to the Detroit Diesel shop in Tampa, and can not find anything about the simple switch I've seen mounted on other busses. Anyone got a part number?