房車改裝DIY： 如何安裝車頂LED燈
https://www.youtube.com/watch?v=ygy8jRMnD3I&t=4s?
In this video, I will show you how to wire the ford transit upfitter switch wiring to control 52 inch LED light bar. After 2020 ford transit model, the old tricks on 2019 and older models are NOT working! So don't waste your time and money on old kit packages. You need unplug 43 and 6 pin harness cables behind the glove box, and replace them with the upfitter package wiring which comes with the vehicle. Three are 2 wires for 20A and the rest two for 40A. Switch 1-3 get power when the key is at ignition position, and the switch 4 has power only when the vehicle engine is on. Remind that! There is a ground point between the driver and passenger seats. Connect it with ground cable and the 12V positive cable goes to the yellow-color wire of the upfitter package. You are ready to go!
