jwaller
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Good idea. I've often wanted a trolley valve on the rear line. I used to tow a 5th wheel dolly behind my truck and it always wanted to lock up the tires on that thing with minimal effort. A trolley valve would have been nice.Hey John Im going to run the lines to the back and switch them to the glad hand lines that are there already that way when i pull a tag along trailer i have a tractor protection valve and a trolley valve. Its true you cant have too much air supply.