Under the kick panel follow the door sill plastic, remove the corner plastic that's right in the corner of footwell, there's a white plug here, you plug one end into that it should be as simple as plug and play, that's if you have all the harness's if not you may need to do some chopping But if you have it all which looks like you do all you do is uncouple white plug you'll have one that plugs into both ends of the ones you unplugged basically extends the loom and taps some of the wiring required without needing to cut and solder