Thread: Led lights on trailer

Originally Posted by loanrangie

Yes please.

I’ll head to the shed and grab parts # for the box etc I used. Jaycar was convenient. Instead of waiting for eBay etc.

I used mini-relays in one for packaging reduction.

Originally Posted by Tombie

I made one.

I then made a second one for a forum member a few months ago.

Total cost $50

Pm sent
Rob

Just be aware that with a whatever type of pulse buster is fitted your dash indications and car actions are a result of the pulse buster not the trailer - so lights out on indicators etc will not de-illuminate the trailer indicator on the dash - indeed with no trailer connected but the pulse buster fitted the car thinks a trailer is fitted so goes through the motion.

So just be aware of that.

Garry

Originally Posted by kelvo

Do you have a D3 or D4?

With a D3 you need a pulse buster to stop the caravan LEDs pulsing. The pulse buster will also then let the D3 know you are towing. This will illuminate the trailer icon when indicating, disable rear parking sensors & rear fog lights, disable automatic height adjustment when changing Terrain Response settings (Manual height selection still possible), and change the shift points on the gearbox.

If you have a D4 you do not get the trailer LEDs pulsing so not totally necessary to do anything. But if you still want the D4 to know you are towing you’ll need resistors fitting to the trailer indicator wiring circuit.

My solution on my D4 https://www.aulro.com/afvb/l319-disc...ml#post2916698

I think … have heard …. and possibly imagine … that in a D4, fitting a trailer makes differences beyond light pulsing.

I imagine that everything you've stated about the D3 are the same but I also believe it affects how the engine/transmission reacts. Anybody else notice this?

What I find hilarious, is the fact that the rocket scientists at JLR designed a car with LEDs that is dependent on incandescent bulbs to notify it that it's got a trailer fitted …. go figure …. LOL!!!

Cheers,

Kev.

Originally Posted by Celtoid

I think … have heard …. and possibly imagine … that in a D4, fitting a trailer makes differences beyond light pulsing.

I imagine that everything you've stated about the D3 are the same but I also believe it affects how the engine/transmission reacts. Anybody else notice this?

What I find hilarious, is the fact that the rocket scientists at JLR designed a car with LEDs that is dependent on incandescent bulbs to notify it that it's got a trailer fitted …. go figure …. LOL!!!

Cheers,

Kev.

Not quite correct. If you use the higher output LEDs on trailer or Van it will work as designed.
Problem is many vans/trailers don’t have these fitted.
Like anything - building for the multiple permutations can be a nightmare.

As for settings - They all make adjustments to set points when a trailer is detected.

Originally Posted by Tombie

Not quite correct. If you use the higher output LEDs on trailer or Van it will work as designed.
Problem is many vans/trailers don’t have these fitted.
Like anything - building for the multiple permutations can be a nightmare.

As for settings - They all make adjustments to set points when a trailer is detected.

Exactomondo re the LEDs...typically trailer makers fit cheapo units..that is the cause of many problems...inc for Jap cars and many others😞

Originally Posted by INter674

Exactomondo re the LEDs...typically trailer makers fit cheapo units..that is the cause of many problems...inc for Jap cars and many others��

Maybe a mechanical solution would have been a good way to account for variables ... like a pressure switch on the plug :-)

Originally Posted by Celtoid

Maybe a mechanical solution would have been a good way to account for variables ... like a pressure switch on the plug :-)

Would you then want the vehicle behaving differently because you’ve fitted a Bike Carrier (for example) and it has indicators? - as required if the bike obscures the tail lights.

See - never a perfect - one size fits all solution.

Even if a “pulse buster” was installed factory - users would either want it manual/ dash selectable/ fully automatic.

There are plugs with reed switches, often used to kill reverse sensors, in some other makes - this wouldn’t work for me for example as I leave an adapter hanging from mine much of the time.