Thread: Interior Lights Issue

Ok, turns out it was definitely the dimmer switch. I had noticed the voltage didn't change smoothly when I was turning the switch, so though this might be the issue.

However, to test it I connected the wires directly together and was able to get lights. At this point I'm considering whether or not to replace it.

Thanks as always,
JRW

Does anyone know of a source of replacement rotary dimmer switch, either an OEM replacement, or a quality aftermarket? Land Rover might sell the switch BYG9130 for just less than the price of a new Defender.

My dash lights work (except for speedo) and my dimmer dial also does nothing.


Haven't cracked open the dash (yet), but suspecting my dimmer has already been bypassed.


I also get a lot of light leaking out from behind the instrument housing into the vent area immediately left of the speedo. Wondering if its possible the globe has slipped away from the speedo and is resting somewhere it shouldn't be.

My dimmer is absolute rubbish, cranking it up and down a dozen times improved things so that it doesn't rattle 'off' as often but i'll be damned if the dimmer is worth having anyway, the standard dash lights are dull enough to be near enough full blackout anyway.

I'd say it's a pretty safe bet the upper light in the speedo has fallen out mate. I'm saying this as my came out pretty easily when I took off my instrument cluster. The lead for the globe is pretty short relative to the the other light leads back there.

Originally Posted by DBT

My dash lights work (except for speedo) and my dimmer dial also does nothing.


Haven't cracked open the dash (yet), but suspecting my dimmer has already been bypassed.


I also get a lot of light leaking out from behind the instrument housing into the vent area immediately left of the speedo. Wondering if its possible the globe has slipped away from the speedo and is resting somewhere it shouldn't be.

I've got a similar DBT speedo light issue but suspect it's a blown bulb stuck in the bulb holder. The workshop manual instructs a 'pull/twist' action but I can't seem to get the damn thing out using 'any' action.

Hey mate, my speedo lights are T10 type fitting which just pull straight out. You'll know if it's the T10 if the base looks flat, not rounded. My other gauge lights are the round BAS style bayonet fitting.

However, if it's the round, bayonet type (BAS9 or BAS7) then mine have to be pushed down and then twisted. Be careful as you certainly don't want to break it off in the bulb holder.

Also, I hadn't realised until I took mine out that the green "condom" can be removed from on bulb and placed on another if your careful and this is what you want. Before I had just assumed you needed to get a coloured bulb.

My dimmer switch is also rubbish. It only works in one spot. A touch either side an darkness! Luckily, the spot where it works is towards the bright end of the scale.