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Reverse Lights Permanently On

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07 Sep 2017 17:39 #183934 by furo
Hi folks,

I was off-roading at the weekend and since then my reverse lights are on all the time (apart from when I reverse haha). Does anyone know what the problem might be and how it could be fixed?

Many thanks!

2004 Jimny Mode; General Grabber AT3s (215/75/R15); Trailmaster 2" Lift; Jimnybits Snorkel; Jimnybits Front and Rear Recovery Points; Osram Nightbreakers; Suntop Roof Rack; AVM Manual Hubs; ORA Radius Arm Guards; Stainless Steel Exhaust System.

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07 Sep 2017 18:15 #183935 by Riccy
Replied by Riccy on topic Reverse Lights Permanently On
Theres wires on the side of the gearbox which tell the light to come on by shorting to negative. i would guess you have snapped a wire on that sensor maybe?

J999 MNY, M16 VVT, R7me gearbox & Rocklobster,
31x10.5r15 Cooper STT, 2x ARB Locker diffs & twin compressor,
6.5" total lift, Zookbob HD steering shock, Ignis recaro's
Custom front bar & arches, rocksliders & guards,
Snorkel, K&N, 13500lb Winchmax, Buzzweld, etc, etc

Plus ULYSSES (06' basher)

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07 Sep 2017 19:42 #183936 by furo
Replied by furo on topic Reverse Lights Permanently On
Thank you!

2004 Jimny Mode; General Grabber AT3s (215/75/R15); Trailmaster 2" Lift; Jimnybits Snorkel; Jimnybits Front and Rear Recovery Points; Osram Nightbreakers; Suntop Roof Rack; AVM Manual Hubs; ORA Radius Arm Guards; Stainless Steel Exhaust System.

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08 Sep 2017 13:43 #183943 by furo
Replied by furo on topic Reverse Lights Permanently On
Hi @Riccy, I had a good look and unfortunately couldn't find any wires coming off the gearbox. Where specifically should it be?

2004 Jimny Mode; General Grabber AT3s (215/75/R15); Trailmaster 2" Lift; Jimnybits Snorkel; Jimnybits Front and Rear Recovery Points; Osram Nightbreakers; Suntop Roof Rack; AVM Manual Hubs; ORA Radius Arm Guards; Stainless Steel Exhaust System.

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08 Sep 2017 16:55 #183948 by mickt
Replied by mickt on topic Reverse Lights Permanently On
Right on top of the box at the front. Double jointed neck and small hands a must!!
The following user(s) said Thank You: furo

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10 Sep 2017 21:53 #183988 by Busta
Replied by Busta on topic Reverse Lights Permanently On
It will most likely be the reverse switch on top of the gearbox. Laying on top of the engine, reach around behind the cylinder head and you will find a large nut (24mm?) with 2 wires coming out of it.

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11 Sep 2017 19:22 #184026 by furo
Replied by furo on topic Reverse Lights Permanently On
Thank you very much for your help. I think I have located it, what do I do now? Just pull it out?

2004 Jimny Mode; General Grabber AT3s (215/75/R15); Trailmaster 2" Lift; Jimnybits Snorkel; Jimnybits Front and Rear Recovery Points; Osram Nightbreakers; Suntop Roof Rack; AVM Manual Hubs; ORA Radius Arm Guards; Stainless Steel Exhaust System.

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12 Sep 2017 16:58 #184054 by Riccy
Replied by Riccy on topic Reverse Lights Permanently On
You just need to check the wires are connected still. it will need a large spanner to remove the sensor completely.

Use a multimeter to test the sensor before trying to swap it - continuity should be between the two terminals when its in reverse, not there if not in reverse gear. If thats ok, then its a wire fault somewhere along its length, or a bad earth/negative connection.

Jimnys use negative (-) switching for most electrical stuff so its basically making a connection to negative on the two wires (i.e. one of the wires will be connected to a earthing point somewhere nearby and the other will go the negative terminal of the lamp). the reverse lamp will have a permanent fused live (+) to the bulb and the negative (-) is switched by that sensor on the gearbox.

If your lights are permanently on then theres probably a damaged wire shorting to earth/negative somewhere so i would be checking the wires for damage or fraying somewhere as most likely candidate (if the sensor is ok).

J999 MNY, M16 VVT, R7me gearbox & Rocklobster,
31x10.5r15 Cooper STT, 2x ARB Locker diffs & twin compressor,
6.5" total lift, Zookbob HD steering shock, Ignis recaro's
Custom front bar & arches, rocksliders & guards,
Snorkel, K&N, 13500lb Winchmax, Buzzweld, etc, etc

Plus ULYSSES (06' basher)

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12 Sep 2017 17:51 #184063 by furo
Replied by furo on topic Reverse Lights Permanently On
That's great, thank you very much.

2004 Jimny Mode; General Grabber AT3s (215/75/R15); Trailmaster 2" Lift; Jimnybits Snorkel; Jimnybits Front and Rear Recovery Points; Osram Nightbreakers; Suntop Roof Rack; AVM Manual Hubs; ORA Radius Arm Guards; Stainless Steel Exhaust System.

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13 Sep 2017 06:31 #184073 by Busta
Replied by Busta on topic Reverse Lights Permanently On
Unplug the switch. If the lights go off the problem is the switch.

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