Discovery 3 LED trailer lights

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Originally Posted by loanrangie

If adding a switch would i put it between the resistor and the earth ?

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What's the switch for
Cheers Bulletman

I would reckon the resistance from the relays is more than enough to trigger the car recognition. Feeling the resistor there is bugger all heat coming off them
Bulletman

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Originally Posted by Bulletman

What's the switch for
Cheers Bulletman

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To toggle between led and non led lights otherwise the car will think I have a trailer connected all the time.

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Originally Posted by loanrangie

To toggle between led and non led lights otherwise the car will think I have a trailer connected all the time.

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Ok, I just made the box to stay on the van so it's not connected full time to the car . Someone wiser than me would need to answer where to put the switch but I would assume as you said on the resistor.

Bulletman

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Originally Posted by Bulletman

Ok, I just made the box to stay on the van so it's not connected full time to the car . Someone wiser than me would need to answer where to put the switch but I would assume as you said on the resistor.

Bulletman

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This is going in the car tucked where ever i can fit it. Looking at your diagram, relay pins 30 and 86 are bridged right ?

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Originally Posted by loanrangie

This is going in the car tucked where ever i can fit it. Looking at your diagram, relay pins 30 and 86 are bridged right ?

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Correct, I actually found that diagram on this site so it's not mine , but I have made 3 units based on that diagram and they have all worked fine.
You just have to make sure you get the direction right.. as in which end is the car end and which is the trailer otherwise the relays are wrong and it doesn't work.. yes I learnt that from experience.
Bulletman

My pulse buster just plugs into the car trailer socket and the trailer cable then plugs into the pulse buster - no switch required, easily moved between different trailers.

Also remember that it is the pulse buster that is tricking the car's systems not the trailer - so while the trailer indicator might show up when turning it does not mean the trailer lights are working - so always check them.

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Originally Posted by 101RRS

My pulse buster just plugs into the car trailer socket and the trailer cable then plugs into the pulse buster - no switch required, easily moved between different

Also remember that it is the pulse buster that is tricking the car's systems not the trailer - so while the trailer indicator might show up when turning it does not mean the trailer lights are working - so always check them.

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Yes that is how I made mine, no led lights you just plug straight into the car socket.
I can understand the idea of it permanently fitted to the car , so I would assume in doing that you would wire it directly into the existing 7 pin plug on the D3.
Bulletman

Ok here's what I'm thinking
As the D3 has two plugs at the rear can you make one plug for LED and the other for standard trailer lights ????

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Originally Posted by A1oz

Ok here's what I'm thinking
As the D3 has two plugs at the rear can you make one plug for LED and the other for standard trailer lights ????

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The white plug is not wired as a trailer, so no indicators