High beam indicator light dashboard not working (SOLVED)

[Engineer8000]

These are 12V clusters that need to be modified to operate on 24V with a dropping resistor. Also the terminal left of the bright indicator needs to be grounded. This is from the FSM for your truck, see how the 24V cluster differs from the 12V. The trace is broken and a dropper resistor is installed, and the ground side (left) of the bright light indicator is grounded via circuit trace. Not sure if the 24V oil pressure gauges are different than 12V.

 

[Engineer8000]

This is the OE circuit board

 

[Rogerr]

The 3rd photo, this looks like a newer, maybe aftermarket cluster? Like this?

View attachment 4131047

Indeed, its the same

 

[Rogerr]

These are 12V clusters that need to be modified to operate on 24V with a dropping resistor. Also the terminal left of the bright indicator needs to be grounded. This is from the FSM for your truck, see how the 24V cluster differs from the 12V. The trace is broken and a dropper resistor is installed, and the ground side (left) of the bright light indicator is grounded via circuit trace. Not sure if the 24V oil pressure gauges are different than 12V.

View attachment 4131053

ah ok thx
I adjusted this and put the old resistor in place
I wired the BW ground wire from the panel directly to the ground (location fuses)


I also found the connector with RY and RB wire
The PO did take this connector for his radio
I estimate this is a missing part why flash is not working

Now the question is how to get things back in place
As the counterpart connector for the RY/RB wire is not there (anymore)

 

[Rogerr]

Examine your high beam bulb holder carefully. The bulb needs clean contacts in the holder and the contacts on the holder need to work with/on the instrument panel. All can easily be bent or surface corroded or the copper plate damaged.

thx, it is a new one the PO told me

 

[Rogerr]

Examine your high beam bulb holder carefully. The bulb needs clean contacts in the holder and the contacts on the holder need to work with/on the instrument panel. All can easily be bent or surface corroded or the copper plate damaged.

checked and ok

Update 02/05/2026
Stand allone the high beam indicator works when I put direct power on it
If H4 is working I can now flash and have continue high beam, but only with H4 on
The strange thing is when I connect the high beam indicator wire on RY wire, it does not work and yes power is on RY

So next:
Flash available if H4 is not working
High beam indictor working for both positions high beam