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What Ryan has done is create a second circuit in parallel with the DR4088LN detector circuit.? This will cause some of the current flowing from the track block to the DR4088LN to go through the resistor and the rest of it to go through the detector circuit, and hence reduce the current going through the detector to avoid false detections.? Hopefully, the DR4088LN will only 'detect' when a loco is in the block and drawing significant current.? If you search with 'current in a parallel circuit' on a web browser, you will find articles explaining how this works.

What isn't shown in Ryan's pictures is that you still connect the track output?from the command station/booster through the DR4088LN as you would have without the resistors being in the picture. With the resistors there will be two connections to each of the connectors on the green strips of the DR4088LN - one for the resistor and one from the track block.? The other wire from the track output connects to the common associated with the green connector for the block you are wiring.? This will create parallel circuit for each detection block.? You may need to use resistors of different values than Ryan suggests to make the detection work - experimentation may be required for your situation, but start with Ryan's suggested resistor value.

The very nature of DCC with its square wave alternating current will generate a phantom current in wires to track blocks even when there is no loco present.? There are techniques to minimize this current - look at sources like the 'DCC Wiki' () and 'Wiring for DCC' () for more information on this topic.

I hope this helps.? If anyone else can provide more information on this to Colin, please do.