Install a rear fog light in your JDM

STEP 1
Carefully remove light bar:

Remove interior boot trim - 5 plastic studs along the bottom edge and then prise off from upper edge.

Remove 11 bolts holding the light bar in place - NOTE: 2 are also securing the lock barrel in place.

Unclip electrical connectors to each light cluster.

Light bar is now ready to be removed - loosen outwards until the top edge touches the lower edge of the glass trim then tilt from the bottom edge upwards.

CAREFUL! ANY FORCE USED TO TWIST OR STRESS THE LENSE PLASTIC WILL CRACK IT.

STEP 2
Making the cutout:

Place the light bar lens down over the arms of a garden chair covered in a towel or bubble wrap. This supports it at both ends and prevents scratches. You will only be working at one end so bear this in mind when setting it up and remember these can easily be cracked and they are rare.

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You will need a bayonet fitting the same as the reverse light (blue/black cables). The other one is the 21/5 dual filament for the brake/tail light.

Remove the existing fittings and note the different shape cutouts for the different types of fitting.

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You will be cutting a hole in the blank circle to match the pattern of the reverse light.

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Note that the 25mm spade bit is 2-3mm too small but I didn't have a 28mm spade or forstner bit so I used the 25mm. NOTE: I think the forstner bit would be too messy for this anyway.

Drill very slowly with a spade bit until you have ALMOST cut through (it doesn't take much). To prevent the cut out dropping into the lens I used an allen key to hook through it and a blade to trim it out.

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Once the main hole is made you will need to trim the diameter by a few mm if you didn't have a 28mm bit - this is easily done with a fresh blade. You then need to make the bayonet cutouts to match. Again a sharp blade make light work of the plastic - if you go steady!

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NOTE - THIS CUTOUT WAS DONE ON MY OLD SMASHED LIGHT BAR AND THE ORIENTATION IS 90DEG OFF COMPARED TO THE REVERSE LIGHT CUTOUT.

My finished cutout on my good light bar matched the reverse light cutout exactly and here is the result:

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The UK spec configuration has a fog light and reflector inside this unit but does not have a brake/tail light alongside. to compensate for the lack of a reflector I will be fitting a brighter LED 382 bulb. In the meantime I will post a picture of the filament bulb in action when it gets dark. 

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The next step is refitting the light bar and wiring up the new light. I suspect that people have different setups already in place so I can only tell you what I did:

Pulled the existing bumper mounted cable through the floor and re-routed the cable as far as it would go in the rear pillar. I connected extra lengths of wire to each and secured the new cable with zip ties to the existing loom.

As my bayonet already had male spade connectors I simply terminated the new cables with females and connected them together ensuring that they were insulated from each other and the bodywork.

Tested that it worked - RESULT!

Replaced the boot trim and had a cuppa.

I CANNOT BE HELD RESPONSIBLE FOR ANY MOT FAILURE THAT MAY RESULT FROM THIS MODIFICATION.

Please also note that there is an alternative modification written up in another How To which relates to the BD/BG models specifically but could also be applied to BE/BH models according to moderator Hallie.