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Major performance gains can be made to the MC28 NSR 250 by use of the HRC card. However. the card is specifically designed for racing and usually requires the use of the HRC wire harness.


We can get around this small inconvenience by some simple modifications to the standard harness. The advantage being that most of the stock electrical systems still functions. i.e. lights, indicators, horn etc.


Here's how it's done: 



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