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Coles County, Illinois | It just needs 2,3 &5. I don't know if you need a null modem or not as I don't know what the input of the unit you're connecting. Normally if you have to change the gender then you'll need a null modem cable. In other words if the GPS out is a socket connection and the input is a socket then you'll need a null modem cable to connect the two. This isn't 100% true just a normal convention. | |
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