@Mark Boyce @RSJB18 Mark and Bob, following is a clip of the instructions. If you use music wire, that will have enough flexibility so freight cars can push the points aside without derailing. One thing I really like over the DZ (their tiny springs are too stiff) and a secondary reason I started to use the Tortoise motors. The contacts are rated to 1 amp, although I was told the supplier knows of O scalers who use the contacts to power frogs with no issues - although he cannot recommend doing so due to the 1 amp continuous rating. Most likely ok because the power draw would be a momentary thing. Dimensions are 2 1/4" x 2" (including the connector) x 3/4" .
They have other versions slightly smaller and a $1 or so less, but for a buck why not get the extra contact? US Supplier This is the link to the outfit I bought these from. My LHS said they could not get them - I tried, oh well.