Thread: Trailer Brake Controller Installation

Just got my mechanic mate to wire in the EBC.

Thanks Sneigy for your instructions, everything worked like clockwork except that it would appear that I have a short between pins 5 and 7 of the plug on the car.

We even disconnected the plug wiring at the connector inside the rear left cubby and worked out that there is a connection between those pins, the wiring harness must be wired incorrectly or something.

I will give the dealer a ring on Monday because we ( the mechanic and I) both agree that the way it is, if you turned the car lights on then the trailer brakes would lock on!!!

The way we have tested, it has to be the harness going to the plug, it will be interesting to hear what the dealer has to say.

I will keep you posted...


Norm

Norm,
IN the fuse box for the trailer circuit (l/h/r corner), have you cut the brown wire & soldered it to the black wire?
I have seen many people do this fitout & forget to cut the wire(brown) as this is the second park light circuit that is not used for Australia.
Then when all connected it will cause the trailer brakes to lock when the lights are turned on.

Cheers.

Pete,

I think you might be onto something because the brown and black wires have definitely not been joined. The guy who did it has not used the same colours as you and I was not looking over his shoulder at the time so I'm unable to make a confident assessment of the rest of the connections.

When we were trying to work out why the park lights were tripping pin 5 we cut the brown wire downstream of the connector to see if we had current between pins 5 and 7, which we did. That was why he said there had to be an issue between where we were and the plug.

Anyway, I will take it back up to him and see what he reckons.


Cheers again Pete,


Norm

Originally Posted by sniegy

Norm,
If you are ever in Melb, drop in & i wil do it for you

Cheers

D3 - My first post on this forum. I'm from Wangaratta NE Vic and am looking for a LR competant auto elec in the area. Also have family in Romsey Vic (a couple of LR mechanics there I think) Looking for recommendation. Need triple batteries installed - led trailer set up, 12 volt points thru out and led internal and rooftop tent lighting

thanks
dj

Okay, I think I have it sussed.

I joined the brown and blacks together as per the instructions and then put the multimeter onto pin 5 and got a series of short beeps, which I assume are the 3v pulses that the D3 sends to the lights.

I then installed the pulse shunt from www.linearelectronicdesign.com and the pulse went away so I assume that the shunt works.

I ran out of daylight and the smell of whatever SWMBO was cooking drove me inside so I will hook up the van tomorrow arvo and give it a test.

One thing though Sneigy, when I cut and joined the brown and black wires from the fuse block, it obviously leaves two ends, one brown and the other black that just hang there. I just put a bit of leccy tape over the ends and left them swinging, is that right?


Norm

QUOTE "One thing though Sneigy, when I cut and joined the brown and black wires from the fuse block, it obviously leaves two ends, one brown and the other black that just hang there. I just put a bit of leccy tape over the ends and left them swinging, is that right?"

Not quite Norm,
The brown wire you have cut at the fuse block end (normally about an inch or so from the fuse block itself)needs to be joined into the black (no need to cut the black wire as this is your park light circuit) wire leaving only the brown wire free, this is where you would join the blue wire from your trailer bake unit.

Confused yet ?

All u need to do is join the 2 black wires & the brown at the fuse block end together.
Then connect the blue wire to the brown wire that is left.

The black wire is your park light cicuit so if u cut this you wont have park lights.

The brown wire that goes into the loom actually goes to pin no. 5 on the black plug, its the variable volatge feed to your brakes.

Any queries ring me at work 03 9684 1021

Cheers

As they say in that Honda add from last year...Isn't it nice when things just come together?

I was just jumping on to say that how it is, I have indicators and brake lights, however have no running lights nor power to the trailer brakes. I just read your post and now I know why...

That makes a lot of sense except that now I think I have joined the blue wire to the wrong brown wire???

Yes, mildly confused but will have another look tomorrow after I knock off work. Was madly wiring last night in the dark and methinks thats possible where I started going wrong.

Cheers again Pete.

You know, you should turn professional and start charging for your advice...from the next bloke after me seems like a logical place to start...

Very nice....