Brand new OEM engine charging harness to provide power to starter, alternator, battery from 2002-2004 RSX Type S. After many MR2 spyder customer complaining about damaged used harnesses that come with their engines and the electrical nightmares of finding a short of broken connection we are now offering new harnesses. This is the charging harness you need when swapping any K20 or K24 into your car if you’ll be using an RSX ECU (with or without Hondata) AEM plug-in EMS, or the to be release Link EMS for the RSX.