What is the voltage output and current limit of the TMCC broad for the headlight and backlight? Is it possible and/or well advised to tie in the LED marker lights with the right resistance.
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No problem at all having some LED markers tied in. The triac that drives the light will handle at least 250ma, enough for several incandescent builb and a few LED's.
Treat it as if it's 12V, so for two red marker lights in series, you'll need a 470 ohm resistor for current limiting. Also, don't forget the frame ground is positive, the light outputs are negative in respect to frame ground. Also, it's advisable to add a diode in series with the lead to protect the LED's against reverse voltage. Finally, if this is not an ERR board, you will need a .01uf 50V capacitor across the outputs of the R2LC lighting to trigger the triac. This is only necessary if you're doing all LED lighting.
Thank you John. Upgrading my engines, mostly Weavers, is a new part of the hobby for me.
Keeps you off the streets, right? 
