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balmybaldwin

Member Since: 17 Apr 2021
Location: Surrey
Posts: 192

2002 Defender 90 Td5 CSW Buckingham Blue

Blown Fuse - interior light circuit

It seems on Friday when I reinstalled my front interior light (using the existing harness - so I know the wires are attached in right order) This blew the 10 amp interior lighting circuit.

This also knocked out the stereo head unit, and weirdly seemed to make the trip computer reset if I turned off the ignition for a reasonable period (not sure how long, but it's not instant)

Removing the interior light and replacing the fuse and the stereo has come back to life and the trip meter has now remembered 2 journeys.

I've recently done a load of work on the car installing things like roof console and a few accessories. I'm guessing I've made a mistake somewhere and somehow installing the light has completed a short, but as I'm using original harness that worked fine before I can't work out what.

Any Ideas? Fairly sure I haven't pinched it in the a pillar trim as part of what I did was install the mud deep trim

Last edited by balmybaldwin on 11th Sep 2022 8:40pm. Edited 1 time in total

11th Sep 2022 7:50pm

LR90XS2011

Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3639

2011 Defender 90 Puma 2.4 XS CSW Galway Green

remove the fuse, reinstate the interior light fitting and then refit the fuse.

see it it blows again;

the interior light has a permanent live and the negative is switched so easy to blow the fuse if removing or refitting the light fitting guess how I know? DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy

11th Sep 2022 7:57pm

Balvaig

Member Since: 19 Feb 2016
Location: Fife
Posts: 729

2016 Defender 90 Puma 2.2 Landmark LE Corris Grey

You can blow the fuse just by changing the bulb

I did.
Just takes the slightest misalignment to short.
You should be ok if everything working again.

12th Sep 2022 7:16am

LandRoverAnorak

Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

When I had mine apart to fit a third interior light, I fitted plasticard insulators to the backs of each unit avoid exactly this:

Click image to enlarge Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia

12th Sep 2022 7:57am

macfrank

Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 1068

2015 Defender 110 Puma 2.2 SW Keswick Green

@LRA neat as always

Why LR decided to use the same fuse for light, clock, radio AND instrument cluster and OBD socket is beyond me. Maybe during development an engineer used slang for 'clock' and 'lights' (i.e. odometer, warning lights) and someone thought "oh, great, there's already a fuse for that. I can make my boss happy for re-using that one."

12th Sep 2022 3:26pm

balmybaldwin

Member Since: 17 Apr 2021
Location: Surrey
Posts: 192

great news, thanks all, will look at insulating it

13th Sep 2022 8:02pm

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