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Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

Installing door switch and interior sensor into alarm

My 2005 TD5 110 was converted by the previous owner from a pick-up to a hard-top, it has the standard immobiliser/alarm on the front doors but no central locking or interior sensor for the alarm.

I'd like to fit a switch to the back door that activates the interior lights and more importantly connect it into the alarm like the front doors are, should there be wiring in the rear loom already or would it require additional wiring?

On a similar note, is the wiring for the interior movement sensor also contained in the standard loom and is it worth fitting?

Thanks, Harry

3rd Sep 2016 1:35pm

Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

Whilst the headlining is out for sound-proofing I'm trying to get the above done albeit without the alarm sensor for now. The plan is to install a switch for the rear door which activates a 2nd interior light when the door is opened and connect it to the door-operated factory alarm so it illuminates when the vehicle is unlocked with the fob.

I've found the grey plug in the headlining at the front but confused by the wiring diagram and just wanted to check exactly how to connect the wires.

Do I piggy back the 2 purple wires from the front interior light and connect them to the rear interior light then run the earth down to the switch before back to the grey plug or alternatively, run 3 new wires (2 x live and 1 x earth) from the grey plug to the rear light and switch?

Any help is much appreciated

Harry

12th Apr 2017 7:25am

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

in the same Gray plug you will find purple brown wire DC + for rear light and black neg side for the light

Click image to enlarge
you have fund Gray plug with purple blue wire for rear door switch

Click image to enlarge

in the same Gray plug you will find wire for interior sensor see below

Click image to enlarge

12th Apr 2017 8:24am

Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

Thank you Dorsetsmith

So purple brown and black neg from grey plug to rear light and then purple blue starting at plug > rear door switch > light?

Any idea what type of connectors are required to go into the grey plug? They look similar to the pins on the black ECU plug but wanted to check before ordering them.

Do I need to activate the rear door/10AS link with a Nanocom or will it automatically detect the addition?

Thanks, Harry

12th Apr 2017 10:47pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Do I need to activate the rear door/10AS link with a Nanocom or will it automatically detect the addition?

No as all the door switch work to one in put to the 10AS ( bar the drivers door switch )

So purple brown and black neg from grey plug to rear light and then purple blue starting at plug > rear door switch > light? Yes

also purple white wire to the light from Gray plug

PM PaulMc re connectors

13th Apr 2017 1:23pm

Harry.O

Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 716

That's great, thank you for your help

18th Apr 2017 10:23am

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