December 28, 2011, 11:19 pm
[quote name='Stoney871' timestamp='1325099334' post='158410']
Probably a silly question.
My Mk2 has a standard light switch unit and i would like to change it to one with a dimmer unit.
Is it possible to do a straight swap or do i need to modify the wiring to allow the dimmer to work?
Just wanted to check before i bought a replacement unit only to find it becomes a pain.
Also if a straight swap is possible, how do you get the old switch unit out?
Is it a dash strip or are the release clips easily accessible from under the dash?
Thanks in advance.
I have done this Modification 99% worked the reason it didnt work for me 100% is because i had a light control switch with dimmer removed from a Mk3 Mondeo and although it looks identical to the one i have in my 2010 mk2.5 focus its not,
its wider than the one in the mk2 and mk2.5 focus by over 1 inch,
however i had it connected to the loom and it did dim all of the interior lights no problem, i didnt realise the size problem until i went to push it in to the dash
i was after fitting it to the loom plug and tested all the features worked so i went to push it in to place and it was too big for the slot,
so it is possible but you need the correct width of unit. best advise if buying on ebay would be to ask the seller to measure the width of the unit, then compare to the one you have in the focus, its a strugle to get a unit that has light leveling wheel, dimmer wheel, front fogs, and no auto light feature. their like hens teeth.
the one i had from the mondeo was 1 inch wider than the focus one.
now to remove the control unit,
if yo look at the panel below the control unit you will see a pocket with the diagnostic socket in it and above the socket is a T25 Screw,
remove this screw then lift the rubber strip from the section of panel where it meets the door of the car,
then pull the panel toward the driver seat, straight out not up or down just straight.
once removed you can put your hand up to the light control unit,
it has a large clip top and bottom spanning the width of itself,
squeeze both clips down on to the unit and push towards the driver seat, it will then pop out,
just remove the loom plug and connect the new unit mate.