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I have a DZ 1090E 4 mast PRR signal bridge (I think that's the item # based on the board under the brodge).  Red is hooked to power, black to common but when you touch the white wire it activates both right signals the yelow wires activate the left.  Blue and green do nothing.  There are several jumpers on the boards but no reference to them in the instructions.  Any help wiring or setting jumpers would be great!  I'm intending to use it to detect trains on 4 tracks in a tunnel out of sight. 

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  • 20250112_101813: One of the boards
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