Because there are no bulbs in the 2010-onward rear lights, so where are you gonna plug that in exactly?

Those are just resistors in boxes with plugs on them, the exact same end result as adding ballast resistors to the wires.

Okay, so I need to know the resistance of these boxes anyway. I have now read about 3 different values of the resistors to get it to work so thought this might work differently.
Cambo used a 6, 8 and a 12 Ohm resistors while George used 35 and a 50 Ohm resistor and another used around 9 Ohm resistors. You read load, cheramic and wirewound resistors which confuses me.

Can I ask what year LED rears became standard on the rear, noticed 2010 mentioned but was that 2011 MY?

Ask as am looking at buying a 2010 portfolio, which may/not have them?

The downside of LED cluster lights has always been the comparative hike in price compared to just normal filament bulbs should they fail.

UK years are one less than the US cars. A 2010 5.0 is the same as a 2009 UK 5.0 and the first year of the X150 body was 2006 in UK, 2007 in USA.

OK Cee Jay, so your saying my 2010 UK car will have them, thank you :)

Attachment 216801Attachment 216800Attachment 216799
This is how I mounted the resistors, on plates so they are in the air, the heat is not a problem.

Using bulbs is a bit of a hack in my opinion...

Attachment 216802

And what happens when a bulb fails that you can't see? I know, easy to replace but not necessarily so obvious at first. I made my own harness and used resistors as well. The resistors get extremely hot but I've had them for a few years and no issues thus far.

I was planning to install the newer led rearlights on my '06 XK, but sold the car unexpectedly yesterday.
I'm left with the lights now, so if anyone reading this might be interested, i'm asking 700 Euro (thats about 800dollar or 630pound).
Located in the Netherlands but i can ship worldwide no problem.
Lights are in brandnew condition, only missing the wiringharness to make them work correctly.

https://cimg8.ibsrv.net/gimg/www.jag...b06bc4814d.jpg

They are on the car and working! As different people here give different resistance on resistors I choose to go the bulb way. I used T10 socket with 16w bulbs, made a bracket and works! Really easy to change a bulb if one should brake but how often do they break?
As for the connector I couldn't get the pins out to relocate them so I cut the connector off and also cut the connector off inside the car where I connected it all together.

https://cimg1.ibsrv.net/gimg/www.jag...1ac445544d.jpg

The fog/reverse lights are not connected yet, my plan was to cut the connector on the lights open and solder on the wires but allways a change of breaking one so am search ing for the OEM connectors. No scrapyard in Sweden has a car standing so was wondering if anybody on here knows of a scrapper with a 2010+ car where one can get the connectors? I don't think a scrapper bothers if I emailed them for such a tiny item so was hoping someone on here knows of one nearby and can cut them off and send them to me, I got Paypal to pay for it.:-)

For connectors & terminals you don't need to just look for an XK you'll find other Jaguars with similar connectors & even Ford & Volvo - remember who owned Jag when your car was made. I had success walking a scrap yard and even asking an ebay seller to remove the connector from the window switch he was selling & sell it to me independently of the switch :D. Good luck.

Thanks but trying to find such a small connector on another Jag or Volvo is like finding a needle in a haystack!:-)

Couldn't find a car of which I could get the connectors so I soldered the wires directly.
https://cimg6.ibsrv.net/gimg/www.jag...46b9f7197b.jpg

I've read you need relays for it to work cause they will flicker and turn off if you connect both fog lights directly due to bigger load with 2 lights. Today I tested connecting the fog lights directly to the car and they lid up just fine, no flickering or turning off!? I haven't tried the reverse side yet as the car is of the road and didn't want to start the car to get it into reverse.
Will I get the problem or does it differ between cars that some work and some need relays?

Reverse and foglights work without a Relay.!:-)