Well I'm hoping that someone here can help me out as I've been unlucky with truck parts dealers, compressed air dealers ect. What I am looking for is a vacum over 12 volt electric selinoid/switch. I am working on a project for the truck and just can't seem to find what I need. The switch will be used to turn my exhaust brake on and off via using a fuller 18spd shifter which is vacum. I have seen Mike AZ's set up and really like the looks of it. The only thing holding me back is the vacum over electric switch. I will run a vacum line to the shifter then runa vacum line to the vacum to electric switch ( should I ever find one) and this will turn the exhaust brake on and off. If anyone knows of a switch like this please let me know. I've been looking for a couple weeks now with no luck. Please leave a reply here or e-mail me at<br>hauler@mindcandies.com<br>Thanks for the help in advance.<br>Derek<br><br>--------------------<br>2002 3500 2WD QC LB<br>HO 6sp 4.10 LS <br>3750miles<br>K&amp;N Filter, Highjacker 21K w/ Gooseneck adapter plate, Pac-brake, Gauges next, otherwise Stock for now<br>&quot;Santa I know what I want for Christmas&quot;<br>

 

http://www.whitmancontrols.com/<br><br>Look here

 

Hauler
If you want a switch like an oil pressure sender try Cole-Hersee. Their 92077 is normally open closes 7&quot;-13&quot; vacuum
the 9253 is normally closed opens 9&quot;-12&quot; vacuum. You can get them at almost any heavy duty auto electric shop.
tom