Toyota Trailer Wiring - Fault

[Wayne1971 Lurker Find all posts View Profile Close Wayne1971]

Electrical Faults - Engine Warning Light after towing

I have had a similar issue, however, it was in relation to the engine warning light coming on after our first towing trip with an off road camper trailer. All was fine until we disconnected and were about to take just the car to do some shopping. Not far down the road, the engine warning light came on, and the wife returned the car without travelling any further to town.

The following day we took the car to our local toyota service centre, and on the way, we experienced a number of further faults starting to occur. The air-con panel went blank, all indicators failed, however, we still had hazard lights operable.

The Service centre advised the following :
- A master fuse had blown, which they replaced
- They felt an overload was made on a circuit (mobile phone charger, fluoro light was being charged also in back 12V point, 2 way radio is also connected to 12V point in front of car, and the Camper trailer has electric brakes)

Their solution was to disconnect the reverse wire from the trailer loom, and if it happens again, to go and see them.

Should I be satisfied with this resolution???? All good and well to disconnect reverse wire from loom, but what happens when reversing at night????

[Guest Close Guest]

Does your trailer have reverse lights is the first question?

[Wayne1971 Lurker Find all posts View Profile Close Wayne1971]

Trailer Wiring Faults

No, my trailer doesn't have reverse lights. I suppose it isn't relevant in this case that they have disconnected the reverse wire, but it seems like a bodgey attempt at correcting a fault.

Thanks
Wayne

[Guest Close Guest]

Most trailer wiring does not have the reverse wiring connected, as it causes faults with 5/7 pin wiring.

[Wayne1971 Lurker Find all posts View Profile Close Wayne1971]

Trailer Wiring Fault

Thanks for the comments.

Being a new 08 D4D proud owner, it wasn't something i had experienced with my previous 2002 V6 Petrol.

Long live the feedback and support from the members on this site.

[MattWhite Advanced Member Find all posts View Profile Close MattWhite]

I have seen the reverse/spare wire used for caravan/camper power. Far from the best solution IMO. I use an anderson plug to power our camper. Just wonder if your camper has on-board power and it fed back through the system somehow?

[Wayne1971 Lurker Find all posts View Profile Close Wayne1971]

Trailer Wiring Fault

Matt,

Yes, we have an onboard battery supply in the camper trailer, however, we do not currently draw power from the car when travelling. I am still to set up a charging system for the battery whilst we are driving.

Any suggestions/ comments regarding this would be appreciated.

regards

Wayne

[Spurio Senior Member Find all posts View Profile Close Spurio]

I use quite a few trailers and got sick of checking the wiring. I came across this thing which checks the vehicle wiring. Most of the time it is how much dirt and mud is in the connection that was the problem.

http://www.ktcables.com.au/trailer_plugs.aspx

As for the trailer-battery, depending on the tolerances and what you are running you need to get a motor-sparky to do some calcs on minimum diameter of wires, voltage drop and usage requirements.

Or you could just go the cheap and easy Anderson Plug setup. I think Chippy had a DIY editorial on here some where.

[MattWhite Advanced Member Find all posts View Profile Close MattWhite]

Chippy did and I have a very similar set-up but read the D4D charging voltage thread. It talks about second battery issues which will effect you too.
Good luck with the trailer issue, just throwing the suggestion out there. :wink:

[Wayne1971 Lurker Find all posts View Profile Close Wayne1971]

trailer wiring

Thanks for the feedback.

Regards

Wayne