Re: surge brakes
Drum or disk brakes? Disk brakes = bad solenoid or wiring. Drum brakes = they may be free backing or may have a lockout solenoid if not free backing. Free backing drums are not suppose to engage very much, but may engage some. If you cannot find a problem and have to take it to a shop, just unscrew the brake line. (Leave a lot more following distance and time to stop) and you should be fine. But don't do anything to make a cop pull you over. (Hard to explain why your brake line is disconnected and bleeding fluid every time you stop to a state trooper)
Some pictures could really help, you might have a lockout and not know it is a lockout. We usually can explain a solution if we know exactly what we are dealing with. (MORE PICTURES PLEASE) A picture is worth more then a thousand words.