Having a hell of a time backup up any slight incline or driveway lips since I redid my trailer brakes. Old brakes were done, a mixup of grease everywhere, no friction material, or detached friction material and of course everything crusty. New hard lines, new wheel cylinders shoes and hardware on both axles. Now it stops great, no complaints on braking performance.
Problem is backing up is not so easy now. Before it would offer some resistance but not cause much trouble, but now any incline or driveway lip will lock the brakes. For a quick backup on favorable ground I just deal with it but anything more and I'm fighting the lockout. Any jarring and it pops back and releases so I try various rubber bands, string, small bungees, etc. to hold it with various levels of success. If I'm smooth, steady, and quick it'll stay locked out long enough to get it positioned where I need the trailer. Trailer has a 5 pin but 5th is not connected to anything. I can't find anything on the master cylinder that looks like a lockout solenoid... Not sure if they came with them? I did find a little line lock for trailers (
http://www.etrailer.com/p-T4748800.html), is that what these typically use and what I need to get? Some reviews say this one in particular is fragile. Are there better inline lockout solenoids? Are there other methods of locking out the trailer brakes? For clarification if relevant these are hydraulic drums on a dual axle trailer with brakes on both axles, master is an Attwood 85778.