Aux Water Tender/One More Question

do you still have sound and does it still power up

Yes they are wired differently. Also the PS2 couplers operate at a lower voltage than PS1.

 

Steve

Thanks for the replies.  I should've made my post more clear.  Everything works fine on my 'J' Class Loco.  The lights and couple on the Aux Tender don't respond at all.  After the snapping sound, I'm assuming the light in the Aux Tender burned-out. 

Are the two not compatible at all?

The light bulb is a different voltage than what the PS2 board uses.  Even if you would have rewired the aux tender first, the bulb would have burnt out very quickly the first time it would have turned on.  The coupler can be fired by a PS2 board, but the firing is not reliable (i.e. it only does it about half the time).  This is due to the lower voltage that Steve mentioned above.  As far as I have seen, there appears to be no negative effects from using the older coupler, but in case there are issues that I am not aware of at this point, use it at your own risk.  I have rewired a PS1 aux tender to work with a PS2 engine.  I changed out the light bulb with one that was left over from a PS2 upgrade kit and left the coupler alone.  You could change out the coupler as well with a newer PS2 coupler that would work consistently.   

Thanks I have parts left over from a PS2 kit I can install Brad

Does anyone know where the switch might be on the tender of this 'J' unit which shuts off the couple on the tender and turns on the couple of the Aux Water Unit?

Thanks

Brad

The PS-1 tender used 1.5V reverse light, the PS-2 uses 6V.  You also need to check the PS-1 tender harness to make sure it is wired correctly.  PS-1 used chassis ground for the couplers.  Some units have allowed the coupler to have one lead to chassis ground.  This can damage your PS-2 board.

 

I always trace the PS-2 harness wiring and the PS-1 harness and convert as necessary.  Someone else asked this and the article is floating around here somewhere.  You can do a search to get specifics.  G

Thanks I replaced the light and the couple of the Aux Tender with left over parts from a PS2 Conversion kit of the same voltage as the 'J' unit. I was thinking this should solve the problem regarding wiring. the light works fine, but the coupler on the J continues to fire not the Aux coupler Brad

Hit the front coupler button.  It should activate the aux tender coupler.  Since all PS2 steamers (except for switchers and logging locos) have no Proto-Coupler on the front, MTH wires the front coupler to be the aux tender coupler if it has the aux tender tether factory installed.

 

Also, just directly replacing the components is not rewiring.  You have to analyze the order of what pins go where in the aux tender tether and then make the PS1 receptacle match.  I have the same vintage J and the same aux tender and I had to do it.  If you have already done this, then you should be okay.  Otherwise, I would check before I try it again.

Thanks for all the help. The coupler now fires by activating the front coupler of the engine Brad