Arrange wirings and fix it using tie wraps.
Regarding the red line, I connected to fuse box. As you can see, the blue line connects to the red line (anode).
Confirm if the keyless entry system operates correctly.
Connect the "Answer Back" lines. If the "Answer Back" lines connect correctly, the hazard lamp turns on and off when the keyless entry is operated. If you remove the cover of steering wheel, you can see the cables. And there are green-black line and black-white line. And connect those line and "Answer Back" lines.
And confirm that the hazard lamp turns on and off when the keyless entry is operated.
Finish ! :D
I live in the ninth floor of an apartment. And I switched on the remote controller of the keyless entry system. It operated and the hazard lamp turned on and off ! :D
Morimori's Golf Mk2 :)