High beam indicator light dashboard not working

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Joined
Jan 17, 2026
Threads
6
Messages
51
Location
Netherlands
Hi gang,

Wire RY on the wire connection to the dashboard has power, see picture
High beam lights working in both handle positions
Dashboard high beam Light itself is not stuck
If I put power on that wire the high beam light is working, not the high beam light indicator

Dashboard lights are working
Turn lights are working

Why is the high beam indicator light not working?
Where to look next?

IMG_4056.webp


GeplakteAfbeelding-1.webp
 
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Contacts for bulb are corroded or dirty? Broken trace inisde combination meter?
You must disassemble.
not sure
dashboard is new
 
I had that happen after installing the factory Toyota Koito H4 headlight upgrade kit, but it was on my mini truck. So not sure it happens with a 40? Just throwing it out there.
 
I had that happen after installing the factory Toyota Koito H4 headlight upgrade kit, but it was on my mini truck. So not sure it happens with a 40? Just throwing it out there.
PO did do some working arounds including tinkering and fiddeling
electric level is not how I would like to see/have it.

As the dashboard is new
All the other lights are working
Some grounding issue?

How did you solve this problem?
 
I ended up looking at the schematic for my truck and found a way to cut the wire to the high beam indicator and connect it elsewhere. It had something to do with the kit plugging into just one of the headlight plugs to run the relays. Sorry, I don't remember the details.

After I did that, I saw a post in the 40 section where they were talking about a plug in solution that one of the venders sell for this exact problem on the 40's.
 
Does the RY to the cluster have power only when the high beams are on? The socket on my old cluster was not grounded well. Once I cleaned that up it was fine.

If it’s got 12V+ when the high beam is on, the only missing piece is the ground.
 
Does the RY to the cluster have power only when the high beams are on? The socket on my old cluster was not grounded well. Once I cleaned that up it was fine.

If it’s got 12V+ when the high beam is on, the only missing piece is the ground.
RY wire has power with high beam, so grounding is then the next check.
When I put power on RY high beam is on, but not the indicator
 
I did not see you say this…. But… did you check the bulb? Even new bulbs go bad… more so from china

Easy check … just switch bulb from the other location to see if it lights
did check and ok
 
if the red/yellow wire has power then its a ground issue for it... is the cluster installed? IE grounded?

never really checked if you would need it grounded for the light to work or not... but... maybe?

check with volt/ohm meter at the light contacts ... see if power is actually getting to the light socket and see if it has ground
 
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