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Electrofrog Point Peco Surface Motor Polarity


James90012
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Hello all

 

I think I've bitten off more than I can chew. I have an electrofrog point which I'm looking to power with a Peco surface point motor.

 

I've modified the point as per DCC electrofrog instructions and used insulfrog joiners, and then wired to a BUS.

 

I've then wired in a relay (GM 500) to change the frog polarity with a switch etc. 

 

However I've got a strange problem, when I run a loco I get a short but only when a loco runs on one of the routes set and hits the point V.

 

If I swap the wires around on the relay, the route that shorts switches.

 

Any thoughts or diagrams I can cross check the work against?

 

James

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