[MARKDTN]

The AAW kits appear to have a new plug so not sure why you would have to replace it? Even so they are probably type 56 connectors. You can buy the terminals and crimp them on if needed-assuming you have enough wire length. That would avoid a splice. Are you exceeding the current capacity of the wiring? If you have a lot of high amp stuff you may need to supply them using relays that (fused) powered direct to battery and are triggered by an ignition source so you can take load off that ignition switch. But I would start with grounds. Proper grounds are so important and so often overlooked.