Where to tap into brake light circuit

[chuckcal]

Hoping someone can save me some time, where can I find the easiest place to tap into the brake light circuit? just want to get the signal to an LED light controller.
Under the seat preferable, but I can find it in the trunk if that is best.

1990 GL1500 SE

Thanks.

[dingdong]

Under the seat on left side there is a large connector c10. The connector is encased in a plastic housing. In that 25 pin connector is a Green with red stripe wire. That G/r wire feeds all the brake lights.

[chuckcal]

That's what I needed. THANKS