Replaced the pacbrake foot switch in my 2000 Monaco Dynasty RV with one of these. It was clear that the original Pacbrake footswitch was an OEM version of the Linemaster compact footswitch. The original switch failed due to a high resistance in the on position, resulting in a low voltage going to the relay that controls the engine brake. Rewiring the settings wasn't an easy task as the "Normal On" settings and "Normally Off" were changed elsewhere in the schematic. Just had to look into the existing switch function and connect similarly. It was tedious to disassemble the switch several times, but doable. The new one works well and should last another 16 years!