Reply to "Another LED constant lighting question for passenger cars . . ."

richs09 posted:

So my question - looking back at the earlier part of this thread, which is a couple of years old - John, you made a comment about not having anything grounded to the frame (in response to a troubleshooting question). 

RIch, that comment is on the DC side of the lighting module. Since the frame & center roller go into the bridge and there's a diode between them and the output + or -, you MUST NOT ground either + or - on the output. For a Flyer 2-rail scenario, same caution applies, except it's the power from the wheels. You don't have to isolate anything, just make sure the DC out of the module doesn't connect to the frame anywhere.

TedW posted:

FWIW,  Here’s a cart share from digikey on the products for the GRJ-JWA pcb.  I’m very sure as GRJ sez, you can find cheaper prices from Asia.  YMMV

Edit:  I already had the chokes which is why they aren’t included.

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