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Blown trailer brake fuse

Started by travelpro, August 02, 2018, 08:13:13 AM

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travelpro

Any idea what would be causing my 15 amp trailer brakes blade fuse to keep blowing? I have a Tekonsha trailer brake system.
Toyota Landcruiser GXL 76 series, 2012 Murranji MKIII

MarkA

Check the wiring to the plug on you're car and make sure there corrosion free and not shorting anywhere also Wiring to the magnets inside the drums can short if they rub or there worn. Remove the drums and inspect or check for a dead short on the van.
Others may have better ideas, 
200 series LandCruiser
Canning Mk 3
And a Mountian of stuff I don't think we need but apparently it's vital camp equipment.

Shaker

I didn't think fuses were meant to be used with brake controllers & that circuit breakers were usually fitted.
Prado 120 GXL 1KZ Manual
Tvan Mk2 Canning
Australian Off Road Quantum
Swag!

peter_mcc

I think you're meant to have a self-resetting circuit breaker rather than a fuse (or manual reset circuit breaker).

Try measuring the resistance of the trailer brakes when it's disconnected from the car - perhaps there is a short.

I find the wires on the magnets break off regularly (experience from high mileage hire Tvan's) - perhaps one has broken and is shorting out on the brake internals. [yes, I use proper Alko off-road magnets - I've got a collection of magnets with wires that have broken off at the edge of the magnet well before the magnet had worn down. I think Alko's magnet is a crappy design and the wire needs more support as it exits the magnet because I suspect the wire inside bounces around over corrugations causing it to break where it is fixed going into the magnet]

Smallfry

I'm not a fan either, have always had disc brakes on boat trailers. Has anyone considered swapping from drum to disc or is it too much hassle
Rob

MK V - Scout 
2014 Pajero

Not all who wander are Lost"

peter_mcc

Quote from: Smallfry on August 02, 2018, 12:58:13 PM
I'm not a fan either, have always had disc brakes on boat trailers. Has anyone considered swapping from drum to disc or is it too much hassle

I looked at it - it's not cheap. A lot more than replacing the magnets every year (or less)! From what I found, you have to get the disc brake caliper mounts welded to the axle stub. You need the disc calipers, new hubs and a hydraulic pump. It's doable just not cheaply. I guess that's why TT stick with drums...

Shaker

Track stick with drums because like idiots we let them by keeping buying their campers, none of us would buy a new vehicle with drum brakes!
Prado 120 GXL 1KZ Manual
Tvan Mk2 Canning
Australian Off Road Quantum
Swag!

Cruiser 105Tvan

#7
There was a thread about changing to disc brakes.

http://www.tracktrailerforums.com/index.php?topic=3131.msg26985#msg26985
a thread from an owner of one for sale in the past.
Previously owned by Cracka.

Described here:
http://www.tracktrailerforums.com/index.php?topic=875.15
http://www.tracktrailerforums.com/index.php?topic=1667.msg12949#msg12949

May even be from the old Yahoo Forum prior to 2013.
http://www.tracktrailerforums.com/index.php?topic=884.msg6010#msg6010 -- Found by Aidan MYT150 who's lots better at finding stuff than me, on this Forum.

Regarding the resetting circuit Breakers.
How would you know there was something wrong if it kept resetting?
Robert.
VK3PPC (Amateur).  VZU641 (Outpost LMR. Flying Doc. Radio sys.)
HDJ 105r with a 1HDFT, 2009 Canning MkII. Refurbed & pushing.