I just got my brake light blinker module in and I just want to be sure about what wires to splice into to make this work right. I've seen the DIYs on here but they all consider the rear spoiler light. I've got the R-spec and only have the rear deck light.
Anyway, here's what I see looking up into the trunk:
Black and red wires in harness to the brake light, and green and black wire (I assume coming from the brake light.)
Here's the accompanying wiring diagram sent:
So I know the black should be joined to black, I'm wondering if it matters if I splice into the red wire in the harness or the green wire above the harness? It'd be much easier cutting the red wire instead.
Anyway, here's what I see looking up into the trunk:

Black and red wires in harness to the brake light, and green and black wire (I assume coming from the brake light.)
Here's the accompanying wiring diagram sent:

So I know the black should be joined to black, I'm wondering if it matters if I splice into the red wire in the harness or the green wire above the harness? It'd be much easier cutting the red wire instead.