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Soulrider911

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

1989 Defender 90 2.5 TD SW Chawton White

Park Brake Light Stuck on, Switch location?

Hey folks. So my park brake is stuck on. I am new to these rad things so still finding my way. Trying to track down where the switch might be, as my assumption is it's a switch/ground issue. I have looked underneath and I do not see a switch... but I could be looking in the wrong area.

I Would love any help. I did find a schematic (that I attached here) looks like the switch should be somewhere under the front cubby?

Click image to enlarge

Click image to enlarge

Also found this, which leads me to believe there is a switch I am just looking in the wrong place

7th Jul 2022 1:15am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5729

2006 Defender 110 Td5 USW Zermatt Silver

The switch is attached to the lever / handle mechanism inside the cab, normally inside the rubber boot. It just has one wire going to it which comes through from behind so under the vehicle by the seat box.

Pull the rubber boot off inside and all will be clear

7th Jul 2022 3:44am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5729

Best pic I can find at this time of day. But should explain.

C0091 is the switch connector

7th Jul 2022 3:49am

Soulrider911

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

So odd, I actually do not appear to have a switch? Here is a photo of the boot pulled up
Thank you for the help

Click image to enlarge

7th Jul 2022 4:03am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5729

Doesn’t look like you do. A better pic

Click image to enlarge

7th Jul 2022 4:10am

Soulrider911

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

Maybe I have a bulb in the wrong location… maybe the light is actually for something else. Have to take the dash out and maybe look at the wires / colors. I k is there is a schematic out in the wild web somewhere

7th Jul 2022 4:14am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5729

Doesn’t even look like you have the mounting holes in your lever assembly.

Click image to enlarge

7th Jul 2022 4:17am

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3422

2012 Defender 90 Puma 2.2 CSW Santorini Black

My 1988 90 does not use that Park Brake indicator. The binnacle was also used on Leyland trucks, not just LandRovers, so there are unused warning lights. Could be something done by a previous owner?

As I have commented on your other thread, if the oil level in the brake master is low, it will actually illuminate the warning sign under the battery warning, not the Park Brake.

Edit: Or was it the one on the right of the battery warning... was so long ago 😭 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black

7th Jul 2022 4:35am

Soulrider911

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

Ah ok thank you how do I check the master level? Is it located under the hood? Thank you so much

7th Jul 2022 4:58am

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3422

Yes, located under the hood, right above where the brake pedal is located. You might see a sticker / sign to only use Dot3 from a sealed container. You may also use Dot4 as Dot3 is probably hard to find (and is lower specs anyway). 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black

7th Jul 2022 5:26am

Soulrider911

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

Thank you for the help, I will take a look tomorrow. I also attached a photo of the bulb harness. Looks like the wire colors are white with a green stripe and black

Click image to enlarge

7th Jul 2022 6:01am

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3422

That is a strange wire combination. Land Rover used to use white for supply on the bulb and then a colored (striped or solid) color to the switch that grounds the circuit.
Any idea where the wires go to? Do they go into the main harness? 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black

10th Jul 2022 12:12pm

bear100

Member Since: 22 Mar 2010
Location: South Wales
Posts: 1917

2010 Defender 110 Puma 2.4 USW Santorini Black

i had a recent leak on one of the metal brake pipes going to the rear, had the same as you with the flickering light at first but then stayed lit, after checking the handbrake switch the reservoir was the next port of call. 2016 Range Rover Autobiography 4.4 TDV8
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi (gone)
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

10th Jul 2022 2:58pm

Soulrider911

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

Thanks for all the help. I did some searching for wiring schematics, and it’s interesting as they all seem to vary? I decided to go ahead an order a service manual. Figured be good to have if I am going to try and fix these things. According to one schematic I found… green with white strip is signal indicator?

I’ll have to dig In the dash and try to follow the wire

Click image to enlarge

10th Jul 2022 3:50pm

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3422

bear100 wrote:
i had a recent leak on one of the metal brake pipes going to the rear, had the same as you with the flickering light at first but then stayed lit, after checking the handbrake switch the reservoir was the next port of call.

I think the low fluid level in the reservoir illuminates the BRAKE (!) warning light, not the PARK BRAKE. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black

10th Jul 2022 4:14pm

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