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Wanted WPC89/WPC-S Transformer Wiring Looms

Calimori

Calimori

Staff member
10 Years
Joined
Mar 15, 2012
Messages
4,520
Location
Bedfordshure, UK
If anyone has two looms
  1. The wiring from the mains to the transformer, just the last bit from the box to the transformer
    1. I am looking for a wpc-s loom TO the transformer, they changed the connections by the looks of it
    2. A male Molex MLX 0.264" pitch connector 9 way: Molex 19-09-2099.
      1. https://eu.mouser.com/ProductDetail/Molex/19-09-2099?qs=jsoPY5EnoNs9zyKIQN3/pg==
  2. The three cables from the transformer to the backbox
    1. This is universal enough for me to make work a wpc89 or a WPC-S (I can change the pins into the right end connectors)
I can build these, but if someone has stripped machine of parts and wants to sell these on, then I can save myself some time and errors. Plus, keep a transformer I have originally wired to have a test bench.
 
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Made mine from the wiring in the manual.

The one i couldnt make (and fortunately managed to source) was the three way one that connects the Power driver to both the MPU and the Fliptronic. Mainly because it goes from one, to the other, and then off to the third. Using punchdowns would be easy, however using crimp molex means you have to squeeze two wires in the same crimp :)
 
Paul said:
Made mine from the wiring in the manual.

The one i couldnt make (and fortunately managed to source) was the three way one that connects the Power driver to both the MPU and the Fliptronic. Mainly because it goes from one, to the other, and then off to the third. Using punchdowns would be easy, however using crimp molex means you have to squeeze two wires in the same crimp :)
Click to expand...

When using crimps on higher power circuits that loop I usually tap a second line off the power line so there is only one wire in each crimp. Cover the join in the loom with heat shrink and you get a nice clean looking connection. I normally use a new piece of wire about 5 to 6 inches long and strip off a bit of insulation in the middle so the crimps attach to each end of the new wire. This also has advantage of lengthening the wires a little so you can make sure you have cut out all the old toasty wire.
 

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As this cable is for a bench testing rig, it isn't ever going to be load tested, except for things like the DMD board which will.

So the main difffernce confimed is that the WPC89 games transformers are Male, whereas the WPC94 and on transformers are female connectors. Not a big deal but I don't want to alter the transformer in any way, or have an unsafe test rig to electrocute the dog.
If anyone has the male 9 way Molex MLX 0.264" pitch connector, then that is what I am after.

Useful page: https://iobium.com/wpc_transformers.htm
It shows what I worked out from schematics, that the transformers from WPC89 to WPC-2000 are, to some degree, interchangeable with the strong caveat that DCS soundboards used lower voltage so a non-DCS tranformer can over volt the power (18VAC vs 12VAC)
 
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