Can I install a Trailer brake in a truck that didn't come with one?

614949

{"text":"My truck is a old US Express Columbia & I am wanting to know what all is involved in installing a trailer brake handle in the dash. I see them on fleabay all the time. Does anyone know how much air line plumbing this would take? Is it all under the dash or do you have to run a bunch of new lines.","pics":"[]","canComment":true}

629138

{"replyTo":"","text":"I think you have to change foot valve and have to run some lines. I had it done on my old US Express truck at Freightliner dealership kind of pricey but worth it","replyToPid":0}

67046

{"replyTo":"","text":"too much trouble and not even worth it","replyToPid":0}

654793

{"replyTo":"","text":"What do u need to do that u can’t just set the brakes?","replyToPid":0}