rustykramermetalfab Posted May 8 Share Posted May 8 (edited) This happened to me a year ago and then "fixed itself". Now it is back. Brake is released and brake light will constantly flash while moving. The first time I asked I was advised a pressure switch could be the issue but the next time I drove the coach the light would go out. I have been on two other trips without issue. I see what might be 3 pressure switches in the front bay shown in photo. There is no switch near the on/off air valve and I do not see one under the dash area yet. Any thoughts appreciated. I have looked in my manuals and electrical schematic book but have not found help there. Coach is 2006 Dynasty. Edited May 8 by rustykramermetalfab forgot info. Link to comment Share on other sites More sharing options...
Larry Laursen Posted May 9 Share Posted May 9 The pressure switch on the right in the lowest photo looks similar to the Nason switch mounted on the bottom of my park brake valve. You may be able to test it by disconnecting the wires and/or connecting the wires to simulate the switch opening and closing. You can go on the Nason website to see if they have a similar unit. I have an 05 Endeavor and the switch comes with a pigtail and connector. It looks like yours has terminals. Link to comment Share on other sites More sharing options...
rustykramermetalfab Posted May 16 Author Share Posted May 16 On 5/8/2024 at 7:36 PM, Larry Laursen said: The pressure switch on the right in the lowest photo looks similar to the Nason switch mounted on the bottom of my park brake valve. You may be able to test it by disconnecting the wires and/or connecting the wires to simulate the switch opening and closing. You can go on the Nason website to see if they have a similar unit. I have an 05 Endeavor and the switch comes with a pigtail and connector. It looks like yours has terminals. Larry Do you think that the switch I am looking for should only have two wires? one to each terminal? The switch on the far right has more than that. There are two other similar that have only one per terminal they are blocked by the convoluted wire protectors. Link to comment Share on other sites More sharing options...
Larry Laursen Posted May 16 Share Posted May 16 The switch looks like a Nason switch as shown in the picture. low_pressure_switch_SM.pdf Link to comment Share on other sites More sharing options...
rustykramermetalfab Posted May 16 Author Share Posted May 16 Larry, Thanks you sir! SO glad to have you guys that have been around this stuff help out. Very much appreciated. Link to comment Share on other sites More sharing options...
rustykramermetalfab Posted May 28 Author Share Posted May 28 Just an update on this issue. I was able to peel the foil part number sticker from the switch and flake off Monaco's paint. I tested the switch with no pressure and the terminals are connected. This is correct according to Nason for the part number this is. I cleaned the switch terminals and all the wire ring terminals. I need to test if it will disconnect with PSI applied. I plan to set it up to Bench test. If that disconnects I will need to search for another pressure switch. Link to comment Share on other sites More sharing options...
rustykramermetalfab Posted June 1 Author Share Posted June 1 Bench tested the Nason switch and it is good to go. Search for the proper switch continues. Link to comment Share on other sites More sharing options...
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