Brand New Ignition Coil Wiring Harness Complete Assembly Fits 2006-2011 Hyundai Accent 1.6L Fits 2006-2011 Kia Rio 1.6L Fits 2006-2011 Kia Rio5 The wiring harness and connectors get very brittle over time and the connection fails causing excessive resistance or an open circuit. Replace the wiring harness as a complete pulg and play unit instead of splicing in new connectors which is time consuming and adds resistance. Also if your ignition coils, spark plugs, or ignition capacitor have not been replaced, it is very important to consider replacing them at the same time. Worn spark plugs allow excessive amperage to back up into the ignition coil and leads to coil failure.