Fuel Injector broken wire

Ok fellas

I have a 2011 Ranger 800 crew , had a engine miss and traced it down to a Broken Injector wire at the Injector end . I repaired the connector (Polaris only sales the injector and harness as a unit) but silly me when wiring the Injector crossed the wires , When cranked it ran perfect for two maybe three seconds and died . Hasn’t started since . Thinking I mat have fried the ECU. Can anyone confirm this . Will wiring a injector wrong burn the ECU ??