That looks familiar, they didn't have one on display so I had to buy it sight unseen out of the catalogue. I found the part number on this forum.
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I think your twinkling lights are the ECU looking for a trailer by sensing a load on the indicator circuits. As they're LED it's not picking up the load.
There's some very expensive boxes that rectify this. There also looks like some cheaper fixes by adding resistors in parallel to the LED indicators to increase the load.
Cheers,
Salty
This is a big thread but all the information about brake controllers and lights is in there.
http://www.aulro.com/afvb/showthread.php't=97935
Cheers,
Salty
you may be able to run the led's via a relay so the ecu reads a normal voltage at the relay. just thinking..
Love the car.
Cheers, Phil
I just got these http://www.ebay.com.au/itm/321949629168.
Going to put them accross the pos and neg connections at the indicators of the trailer.
I'll let you know how it goes.
Cheers,
Salty
So I've installed the resistors and all functions now work. I had to tap in to the reverse wire in the left hand rear space and cut the rear trailer fog light wire and connect them to get the reverse lights on the trailer to work.
The twinkling however persists, which if I'd read this thread earlier I would know that my D3 needs relays to filter the twinkling. So that's the next task.
Cheers,
Salty
Now the relays are installed there's no twinkling and the dash has the trailer light. Solvered.
Cheers,
Salty