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					Originally Posted by sperry  The URs are low impedance (or high impedance, whatever is the opposite of stock, I forget) and therefore require some creative wiring to add the converter box inline with the stock wiring. | 
	
 with the URs you need to cut into the harness and solder the injector connectors and resister pack..
 the URs are low impedance.. I have the wiring chart looks fairly easy but we all know that its not...