are those blocks aluminum or are they tin/lead plated copper?I used to have 6 total...retired now working with a rex, with far more wire //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif.
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Edit...cant see the third run...its out of the bottom of the picture...those D-blocks have 6 wires in them each.