Questions about transplanting a 5v PS2 board in a Williams scale GG1

I am cutting my teeth on my first PS2 conversion.  I acquired a 5v PS2 board from a Rugged Rails F unit.   I am installing it in a Williams scale GG1.  I will not be using the electocouplers (I use Kadees).  There is no smoke unit (I wasn't planning to use one anyway).  I would like to use LEDs for the headlights and Classification Lights. I'm using the pinout diagram that GRJ posted a few years ago.  So here are the questions:

1.  I read somewhere that I need to put a resistor in place of the electocouplers (since I am not using them) to prevent burning out the board.  If this is true, what size?

2.  Can I just remove the smoke switch?

3.  What voltage are the headlight and interior light circuits?  They are DC, correct?  I believe the purple PV wire is positive, correct?  Resistor size for the LED?

4.  It appears that the Marker Light pins are DC and already have a current limiting resistor.  If not, what voltage do they provide?

5.  Will a GG1 5v PS2 file allow control of all of these lights?

Thanks 

Bob

 

Original Post

Just a comment on the couplers.  I don't recall how the Williams couplers are wired up.  If they are like the old Lionel coil couplers, they CANNOT be used, because they are grounded to the track.  MTH DCS couplers are grounded back to the board.  You'd have to use a relay or buy and try to mount MTH couplers.

You'd be ahead of the game buying an upgrade kit, which will have everything you'll need, lights, couplers, etc.

Personally, I wouldn't waste time installing a 5-volt board in anything, because they have passed their expected life and you could be wasting your time.

 

Thanks.

The Williams GG1 has manual couplers.  I will be converting to Kadees.

I am aware of the limitations of and potential failure with 5v boards.  This conversion is to learn on.  I'd rather do my screw-ups on this board than a $200 PS3 board.

Bob

THat resistor thing is for PS-3 not PS-2.  If your using LED for lights you need to put a current limiting resistor on the line to the LEDs.  Typically around 150 to 470 ohms depending on brightness you want.  220 works.  G

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Thank you to the guys that responded with answers to my questions.   The upgrade went fine.   There was a 5v GG1 file available (in the RailKing line) and the engine runs great.   Once I got over the intimidating bird's nest of wires and identified them one by one, it wasn't difficult to do.

Bob

A substantial percentage of people are scared off from doing a job (on model RR or elsewhere) because they are intimidated.  But you identified each, and then went on successfully.  That's the trick to tackling an intimidating problem--track each component down.

MTH electro couplers fit in the Williams G no issue.  I have converted many Williams scale G motors to PS2.    I would not waste my time putting in a 5 volt board.  Go for the PS3 upgrade and you will be in good shape.  Those 5 V boards are like time bombs.  I know you will not like what I said but if you go with the upgrade kit you will have the correct length couplers and all the lighting you may need.  

 

 

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I agree with your advice, Marty, but it seems to be too late.  On the other hand, having done an upgrade, when the 5-volt board does fail, he'll have to confidence to install a latest-version upgrade kit.  Nothing like success to build confidence for future efforts.

Bob, the PS3/2 board can be used.  It would be easier to do it the right way from the get go.   The 5 V board is a thing of the past.

 

 

TCA-79-13758

T.T.O.S.-3057

LCCA-28444

LOTS-RM-4833

MTH DCS and Wi-Fi  Beta Tester

MTH Factory  Certified Technician-6 schools Repair Technician #990284

LIONEL Factory Trained certified  Repair Technician #10140

Member Mid America 3 Railers and NJ HiRailers

 

 

 

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Todd Knollrepair technician
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