Removal of Circuit Board

[rich1998]

Very good.
I have never found any issues with the circuit boards except when they get in the way of putting in a decoder and speaker like the 4-4-0 tender which is small.
I did add wipers so all the tender wheels have pick ups.

Rich

[russ daley]

I read several post on circuit board removal and headlight bulb/LED replacements but remain a bit confused on whether I need to add the 1K resistor when removing the circuit board and direct wire to decoder. The Engine is a Spectrum 4-6-0, probably purchased 2004-2007 time frame. To be honest....I couldn't tell you if the front headlight is a bulb or LED. The rear backup light looks like a bulb. The parts list really doesn't define. I do know that when I direct wired the light to a DC transformer I get the "dim" clear light same as in DCC and not the assumed LED green light I see on other engines. I can live with the dim light but I want to avoid burning out the existing light whatever it may be.

So questions are....I know what a resistor does but what exactly will the 1K resistor do in this circuit? Why a 1K? Do I need a resistor in my hard wiring regardless if the light is a bulb or LED? 

thanks,     

[rich1998]

Yes. The PC boards were labeled also in my steamers.

Rich

[russ daley]

Thanks Rich....Install in Blue Common correct?

[russ daley]

Never mind Rich...After some more research I think I got it down...thank you...next adventure is getting a double crossover to work...oh boy....

[rich1998]

Well 1k for LED's are normal and 28mm for speakers are normal at least for me.
I have done reverse loops and crossovers but never a double.
Good luck. It has been many years.
Time's fun when you are having flies. I will be eighty in April.

Rich

[russ daley]

Well Happy Coming Birthday.....I'm 66 and really don't get into the hobby until cold weather....had the best train season this year than I've had in many years...spent a great deal of time this year trying to get some engines to run, learning how...remembering...etc...

thanks for your contributions Rich....