Electric brakes blow fuse??

I have rewired my trailer using 10&12 GA wire. No fuses or breakers in the circuit that I could find. The rewire job didn't make any noticible improvement in the voltage available at each individual wheel brake.

Bipeflier wrote:
if wired to the SAE standards, electric brakes must be on an automatic resetting circuit breaker, not a fuse.

Again what fuse(s) are we talking about? I am presently rewiring a Keystone 5th wheeler and don't see any fuse or circuit breaker connections (on the trailer itself) to the brake wiring. Only a connection to the TV wiring, which of course is fused. But no resetting circuit breaker or protection on the trailer itself. Maybe I should break into the wire going back to the brakes and run it through a resetting circuit breaker but not sure what that would really accomplish. But there is certainly no circuit protection of the brake wiring from the factory.

I believe that if wired to the SAE standards, electric brakes must be on an automatic resetting circuit breaker, not a fuse.

My Dexter axles are definitely wired in parallel.

Jerry B wrote:
I have the p3 also. It's good the controller recognizes the fault and advises of it. I am currently replacing the electromagnets and have noticed potential areas where shorts could over time occur.

In my old truck I had a Prodigy P2. Several times it gave me the NC (no connection) or OL (overload) error. I finally determined the OEM wiring on the trailer was a wreck. In-line connectors, wire nuts, wires rubbed bare, etc. The big problem is with the brakes wired in series, if one fails it kills them all.

My solution was to get a brass terminal block for both the brake 12V and the brake ground. Then I ran individual 12V and negative wires to each wheel (10 gauge wire by the way). With this set up if one wheel fails it will not break the connection to the others. This set up has served me well for over 10 years.

KJ

Grr, electric trailer brakes, the bane of my existence. Have to say my new DRW truck handles the trailer brake failure much better than my previous SRW. Haven't blown fuses. Have new magnets, bearing seals and just waiting for the motivation to arrive.

I have the p3 also. It's good the controller recognizes the fault and advises of it. I am currently replacing the electromagnets and have noticed potential areas where shorts could over time occur.

We had a intermittent short on our brake wiring that the Tekonsha Controller repeatedly notified us of. Never did blow a fuse though. Had to replace the wires running through the axle tube on the rear axle due to worn insulation. A minor issue compared to all the other major issues we had on our 2006 Keystone Montana 3400RL.

I've had 3 total brake failures where my Techonsha P3 brake controller was getting "Current Overload, No Brakes". All 3 times were due to wire insulation wearing through caused by friction and shorting out. Twice the short was in a hub and once in the wiring that was running through the axle. I have Dexter axles which were replacements for the original Lippert axles. Dexter fixed 1 failure just as my 2 year warranty expired.

What fuse are we talking about?