Can anyone throw light on this please?

I have come across a set of Gaugemaster Station lights but there is no actual wiring diagram, thet are about twenty or more years old,
there are resistors etc included but what goes where?



 

I wouldn't bother with those pcb"s. The long leg of a led is positive. Depending on supply voltage I'd use a 10K resistor first. If that 's too dim try the 1K. I usually connect the resistors to the positive leg of the led. It doesn't really matter which leg, but I try and keep them all the same.

peterm said

I wouldn't bother with those pcb"s. The long leg of a led is positive. Depending on supply voltage I'd use a 10K resistor first. If that 's too dim try the 1K. I usually connect the resistors to the positive leg of the led. It doesn't really matter which leg, but I try and keep them all the same.

From “Post #293,389”, 7th April 2026, 12:42 am

Another way which works with older lamps but not necessarily with recent LED ones is to simply wire them in series.  That's what I did with several sets of lights on successive layouts with the wiring adjusted until I got the required "golden glow" rather than a brilliant white and the smell of hot lamp unit!  

For a longer platform I found that wiring three lamps in series with each other produced the required illumination and then wiring the groups of three in parallel was the solution.  A bit of trial and error but it worked.