Hi All

Been a long time since I posted!

I have a 2005 RRS SC. I fitted the 2009 clear rear lights earlier this year which was very easy.

Now I have just bought a brand new pair of 2010 LED rears. I have read a few posts, mainly Bellsauto posts about resistor being needed for them to work correctly.

Does any one have some clear instructions of what I need to do with what wires and what resistors I need?

Thanks in advance.

David RRS Supercharged

HST Body Kit, 2010 Rear Lights, Fully Colour coded, 22 Rinspeed's

Hey David!

I know nothing about these but thought id say hi lol

I know youve bought them already but most sellers on ebay sell them with the resistors already fitted WINNER - 2009 Best in Class Range Rover Sport Award

MY14 Corris Grey RRS HSE SDV6

David,

You need to find out the current load of the LEDs then you buy a Resistor that limits the current to that something like 20mA etc for LED.

You should get the info from the back of the light cluster and buy a suitbale resistor to match that current

hi...it's very simple.
look my gallery.[/img]

Adam RRS wrote:

Hey David!

I know nothing about these but thought id say hi lol

I know youve bought them already but most sellers on ebay sell them with the resistors already fitted

Hi Mate

How you doing. See you still got the RRS.

I just bought a HST kit so have been really busy!

Yeah I know but I got my rear lights very cheap!  RRS Supercharged

HST Body Kit, 2010 Rear Lights, Fully Colour coded, 22 Rinspeed's

chris mc wrote:

David,

You need to find out the current load of the LEDs then you buy a Resistor that limits the current to that something like 20mA etc for LED.

You should get the info from the back of the light cluster and buy a suitbale resistor to match that current

I spoke with Pete at Bells so should be all sorted this week.  RRS Supercharged

HST Body Kit, 2010 Rear Lights, Fully Colour coded, 22 Rinspeed's

iz6byo wrote:

hi...it's very simple.
look my gallery.[/img]

No they are not! Yours are the 2009 mod.  RRS Supercharged

HST Body Kit, 2010 Rear Lights, Fully Colour coded, 22 Rinspeed's

i told about the resistor.....
i'll put there

hi i was wondering how far have you got with installing your lights as i have just bought some for my rrs and need to know where this resistor goes 2.7 tdv6 se java black bought totally standard had 20" stormers, upgrades so far led bulbs all round, smoked side repeaters 22" supersports, gone for colour coding

mrsport wrote:

hi i was wondering how far have you got with installing your lights as i have just bought some for my rrs and need to know where this resistor goes

How to determine the size of resistor:

R = (VS - VL) / I

VS = supply voltage
VL = LED voltage (usually 2V, but 4V for blue and white LEDs)
I = LED current (e.g. 10mA = 0.01A, or 20mA = 0.02A)
Make sure the LED current you choose is less than the maximum permitted and convert the current to amps (A) so the calculation will give the resistor value in ohms ().
To convert mA to A divide the current in mA by 1000 because 1mA = 0.001A.

You connect your resistor in series :

The resistors for these tail lights aren't required to limit the current/drop the voltage - they are to provide a load so the vehicle believes there are bulbs fitted.

This is for fitting D4 lights to the D3, but the same principle will apply: http://www.disco3.co.uk/wiki/index.php/Fit...ear_Lights Like this site? Buy some RRSPORT goodies to show your support!

Last edited by Martin on Tue Nov 23 2010 11:38am. Edited 1 time in total

Martin wrote:

The resistors for these tail lights aren't required to limit the current/drop the voltage - they are to provide a ballast load so the vehicle believes there are bulbs fitted.

This is for fitting D4 lights to the D3, but the same principle will apply: http://www.disco3.co.uk/wiki/index.php/Fit...ear_Lights

My apologies - the word "ballast" crept in there. PP Like this site? Buy some RRSPORT goodies to show your support!

Martin wrote:

My apologies - the word "ballast" crept in there. PP

As I said the resistor required is not being used in the way you're thinking - the 2010 LED lamps are 12V supply assemblies.

The issue is not powering the LEDs themselves, they will work fine as "plug and play" on pre-2010, but with 2010 rear lamps fitted the pre-2010 body controller doesn't see sufficient current being drawn by the rear lamps, so assumes a bulb has failed. It then flashes the indicator lamp on the instrument cluster at double speed as a warning.

A high wattage resistor is fitted in parallel to simulate a bulb and "fool" the body controller, returning the warning lamp to the correct speed.

See my link to the DISCO3 wiki for more info. Like this site? Buy some RRSPORT goodies to show your support!