I have a 7000# rated car hauler, that didn't come with brakes. i was wondering what all is involved with putting brakes on a trailer that didn't originally come with them.

 

depends on what axles are under it...if it has the correct spindles it wouldn't be that bad...I would suggest to take it to a local trailer supply company and ask them, you may get a better idea that trying to search online for parts...

also, check you state law but some states require different things...

PA for example..

any trailer registered over 4500 lbs needs...
inspected once a year...
"brake away" brake kit...
brakes on all axles...