XJ ( X351 ) 2009 - 2019

In need of LED in leadlight hack

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Old Nov 4, 2013 | 01:46 AM
  #1  
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Default In need of LED in headlights hack for 2012 XJ

I am in need of the pinouts, pictures and diagrams for the hack into the LEDs in the headlights so they are on all the time. I believe it was posted a while back by member Gears. If you have it please send to Mets1525@gmail.com. Thanks in advance.
 

Last edited by Mets1525; Nov 4, 2013 at 01:56 AM.
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Old Nov 4, 2013 | 08:29 PM
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Hi,
I'll post something soon. I have to make a wiring sketch and take some pictures. Give me a couple of days and I have it.

Take note: The front will just look like the same as if you put light switch parking light selection. Just all the time and without the back parking lights on.
 
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Old Nov 16, 2013 | 02:59 AM
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Thanks Gears. I appreciate it.
 
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Old Nov 19, 2013 | 01:15 AM
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Be careful with having those on all the time at high brightness, if they don't have the appropriate heat sink on each one of those LEDs, they will burn. First they will start losing intensity unevenly, then they'll burn. I think there is a reason why they kept those off. Luxeon LEDs need very specific heat management and very constant current to work properly and last.
 
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Old Nov 19, 2013 | 12:33 PM
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I question the premise that the LED signature LEDs are not up to being on all the time as when DTL is actuated the low beam HID and the LEDs are on all the time. So they may indeed be up to the task.
 
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Old Dec 3, 2013 | 10:05 PM
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Hello,
finally I got around to post the LED headlight hack.

Description:
The relay installed will be activated by the 12V ACC when ignition is turned on. This switches the 12V power source of the LED strip in the head light to the same 12V ACC source which will cause the LED strip to be on when the ignition is turned on. It will go out a few seconds after the ignition is turned off.
When the relay is deactivated the LED strip will receive its 12V power from the headlight harness, just like before the rewiring. That way they work with the parking lights.

The relay us neccessary to a) make sure the parking lights work and b) so the tail lights don't come on with the LED strips when the ignition is turned on.

Cut wire for LED strip (see pictures of plug) about 2" from plug. Connect to relay contact. Connect the wire from the harness to the normally closed (N/C) contact on the relay. Connect the 12V ACC power from fuse box in passenger side of engine compartment to relay coil AND the normally open (N/O) contact on the relay.

Please make sure to get a relay with 2 sets of contacts as you want each headlight has its own wiring. It is a very easy hack, assuming you are comfortable with basic vehicle wiring jobs. I ran the wires in a OEM like slitted flex tube and used cable ties to make it a professional and almost invisible job. The relay I attached with double sided tape in the engine compartment.

Pictures below

Driver side headlight plug


Passenger side headlight plug


Relay


Tap in fuse box


Some misc. pics





Wiring Diagram
 
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Last edited by gears; Dec 3, 2013 at 10:08 PM. Reason: picture missing
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Old Dec 4, 2013 | 09:44 AM
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Many many thanks Gears for this!!!
 
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Old Dec 4, 2013 | 12:44 PM
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Cheers mate, thanks a lot for this!
 
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