I run my new California Zephyr and it has very nice bright drumhead and markers.  The 20-65237 is very dim.  I see there is a board with what look to be 4 diodes.  Is something wrong that they are so dim, or is this normal?IMG_2666

Bryant

TCA 18-73717

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Bryant Dunivan 111417 posted:

I run my new California Zephyr and it has very nice bright drumhead and markers.  The 20-65237 is very dim.  I see there is a board with what look to be 4 diodes.  Is something wrong that they are so dim, or is this normal?IMG_2666

I thought this one would be easier.  Are the marker lights and drumhead supposed to be dimmer than interior lights.?

What would be the # replacement (look like 4 diodes).  John, or someone else that knows?

Bryant

TCA 18-73717

I took a look at this because I have an MTH observation car of roughly the same generation as yours and I have added LEDs to Lionel observation cars to better illuminate the markers and drumheads.

I can't help on the MTH part # as I can't trace one on their (inadequate) online replacement parts list. However the MTH observation car I have looked at does have brighter marker lights than your photo indicates is the case with yours. The ones shown in your photo appear to be incandescent not LED and as far as I can see the same applies to mine, which also has other incandescent lighting (the overhead compartment lights) in it.

I can't work out what might be causing yours to be dimmer than you'd expect. I will say that in mine the marker light bulbs are right up against the back of the marker light bezels. Lionel made a lot of observation cars where there was no separate light source for the markers and they relied on the interior lights for such illumination as the markers had. It is relatively easy to provide LED lighting for these provided you have a power module that will take AC track power and convert it to DC output. I swear by GRJ's passenger car lighting kits, which I have adapted for this particular purpose. 

 

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