2010 d40 wiring

[DANMAN]

Hey Guys,
New to the site so still getting used to it...
Can anyone tell me if there are any dramas with the wiring for trailers.
I have towed my boat with my old 02 model commodore ute with no dramas regarding trailer lights. I hook up the boat onto the D40 and i have blown the tail light fuse - which i replaced. When i tried again i now have blown the brake light fuse....

Is there something up here, or should i just re-wire my trailer seeing as though it has only been in salt water???

Appreciate any advice.
Dan.

 

[Old.Tony]

If the thing worked with your Commodore, I don't think the trailer is going to be instantly to blame. Of course, corrosion and wear can cause faults, but let's look at the obvious first.

The car's wiring might not be perfect. I suspect that the auto electricians working at the dealers are (like the service guys) pushed to meet a certain number of jobs per day and in doing so they'll cut any corner they can.

I'd get someone to have a good look at your plug on the rear of the Navara first and make sure it's wired up properly. Not just that the correct wires are on the correct pins in the plug, but the wires are properly in place.

I'd also have them follow the cabling and make sure it wasn't crushed or damaged somewhere along the way, either by catching it in the steering rack, or having a stick impale the conductors, or having a hot exhaust melt the thing together.

If that's all okay and the car tests fine, perhaps it is the trailer. Check that the cables haven't been crushed anywhere. Also look for frayed cables, make sure nothing has been dragging on the ground. Salt water is a conductor, yes, but it's not going to conduct enough electricity - especially at 12V - to blow fuses.

 

[KraftyPg]

Welcome to the forums Dan.

Your problem could be as simply as the wiring being wrong. We've come across quite a few trailers over the years where the wiring has been changed for some reason and they don't work when plugged into the correct socket. We've also come across a number of cars where the wiring has been wrong and trailers have been adapted to the wrong wiring to make them work and then their trailer gets borrowed by someone else and they realise the problem.

More recently we came across a trailer maker who makes trailers large enough to be braked, he installs the brake controller on the trailer but doesn't test it on the car because he assumes the original wirer did the job properly, he's been lucky up to recently when this wasn't the case and the brakes didn't work after he told someone they did.

So even if everything is done by professionals it pays to check, you can easily check the wiring diagram for the standard towbar plug against your wiring to make sure, atleast then if it is all ok you can rule it out of ever being a problem.

 

[DANMAN]

Sounds like good advice, cheers. I will go over my trailer first and look for any suss wiring and see how i go from there. Thanks again.