Brake Warn Lamp Wires

[Ppardini]

Hello everybody I've been lurking around this page for some time but have never posted, amazing the amount of knowledge on here! My 16 year old son and I are rebuilding a 1972 Chevy K20 for him. I have gotten tons of tips, tricks and answers from this forum. I have a question that I've searched for and found some parts of the answer but not the entire answer so here goes: installed a new painless wire harness hooked up a battery to it recently and just about everything works as it should, however I'm stumped on the brake warn lamp, I know that 2 brown wires are on the ignition switch one wires in to the master cylinder wire from engine compartment and one wires into instrument cluster harness, that's where I get confused every diagram I can find shows 1 brown wire for brake warn lamp coming off the instrument cluster harness but our original instrument cluster harness has 2 brown wires from this pin and I can't figure out for the life of me where to wire in the second wire. Any ideas would be greatly appreciated!