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jerseyman

Member Since: 21 Jul 2009
Location: Jersey
Posts: 279

Number Plate Light wiring

I am replacing a broken number plate light on my 2.4 Puma with a Wipac LED.

I have spent the afternoon so far doing a "20 minute job" and having reached the stage where I have dismantled sufficient of the interior trim to reach the Sumimoto connector. I have failed to work out how to remove the connector from the fastener holding it to the floor (Looks as if it should slide off, but blowed if I can do it) and then realised that even if I did manage to get it off the floor, working out how to separate it would probably defeat me. So I now intend to just snip and join the wiring.

The wiring on the original is Black (Earth) and Red/Black(Live). The wiring on the replacement is Brown and white. I assume Brown is live? but before I solder and heat shrink would just like to confirm it.

(Once I have got this stupidly fiddly job done I then need to spend a fun hour Googling and ordering replacement fasteners for the trim. I swear someone at Landrover was giggling to himself when he specified the bits!)

3rd Aug 2022 4:54pm

DSC-off

Member Since: 16 Oct 2014
Location: North East
Posts: 1428

2015 Defender 110 Puma 2.2 XS CSW Aintree Green

I can't confirm the wire colours, but temporarily connect the wires by twisting them together and test to make sure the LED light works. If all is OK, then solder and heat shrink.

3rd Aug 2022 7:18pm

Soulrider911

Member Since: 04 Jul 2022
Location: California
Posts: 108

1989 Defender 90 2.5 TD SW Chawton White

I just rewired the whole left rear corner of my 89. Maybe I can help. Is the connector your talking about a bullet connector junction? like a round oblong potato-looking deal?

Is the new light an LED? If you have a 9v battery lying around touch the leads to a 9v battery should light up... you will be able to figure out what is POS and what is NEG. My guess is White is HOT (+) 1989 Defender 90
2022 Defender 110 SE
DIY’er | Always learning

3rd Aug 2022 8:11pm

jerseyman

Member Since: 21 Jul 2009
Location: Jersey
Posts: 279

Thanks guys, being new to LEDs I thought that if I connected the wrong way then the LEDs would fry, from this advice I guess not!

Soulrider, on my Puma the connector is one of the modern press here, push there whilst muttering an incantation in order to separate the two parts, then you have to find a method of getting out and reusing the pins. I think it's called progress!

4th Aug 2022 8:36am

Balvaig

Member Since: 19 Feb 2016
Location: Fife
Posts: 732

2016 Defender 90 Puma 2.2 Landmark LE Corris Grey

Generally if you connect an LED the wrong way, it does no harm, it just doesn't work.
Always best to use a multimeter on the existing wiring to determine 12v and negative. LR are renowned for not following the wiring diagram and transposing wires, which doesn't matter on incandescent lights.

Last edited by Balvaig on 4th Aug 2022 1:48pm. Edited 1 time in total

4th Aug 2022 9:05am

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3421

2012 Defender 90 Puma 2.2 CSW Santorini Black

LED stands for Light Emitting Diode. So as the name suggests it is a Diode. A diode is like a non return valve in a hydraulic or pneumatic system. If you connect in one way, the current (like water, oil or air) will flow and the LED will illuminate. If you connect it the opposite way, the current will not flow and the LED will not illuminate. There is no harm to the LED if you connect the wrong way. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black

4th Aug 2022 11:16am

jerseyman

Member Since: 21 Jul 2009
Location: Jersey
Posts: 279

For the Wipac LED Number Plate light, the Brown lead is, as expected, Live

The part number for the spring clips is BTR6682

The part number for a kit of fittings for the speaker trim is (I think) STC62025.

5th Aug 2022 4:05pm

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