3 brown wire on sr harness

[bishoptaner]

like the title says i have three brown wires that i cant find out which one to hook up. this is a cut harness i dont even know why i bought the sr with a cut harness never again. if someone could help or just give me the wiring diagram english or jap i dont care i just need to hook up this wire. all so the other three black wire i figure they are ground but if anyone a conform it that would help too. its a s13 redtop thanks