I think you have some wires crossed, maybe an earth in a power line.
Pics showing the connections where the black power wire from the indicator, (not the ground black) to the Dg, (Dark green), and Ch, (Chocolate), multi bullet connectors would give a better diagnostic. In the Video at 3.26 i thought i could see 2 black wires into the Dg multi bullet connector.
The Dg and Ch wires can be hard to identify so make sure the wires are cleaned for identification.
I have marked the wiring diagram showing the Indicator power wires, Dg and Ch and the headlight main power, Y, (Yellow), and the low beam power wire G, (green). The Y, power wire from the headlight wire goes into a Multi bullet connector that splits off. one to the High beam switch and the other to the on/off switch. In effect, the power goes to the headlight from the on/off switch, through a Y/B, (Yellow/Black), wire converting to Y at a resistor, (32), on to the headlight then back to the hi/low beam switch, low beam power goes back to the headlight through the G wire.
This wiring diagram has the wiring key so i used this to show the wires. The Diagram shows the power to the indicators as Dg and Ch, in fact the power wires that come out of the front indicators are black and should go into the Dg and Ch multi bullet connectors. Rear indicators B, (black power wire), go into a single bullet connector, each to a Dg and Ch bullet connector
