1980's Mercury Black max 150 Trim question

[SkeeterDuke15]

So i recently purchased a used skeeter with the black max 150 on it. the trim works but a few of my buttons don't. so if i go back to the motor and hit the trim up/down it works fine, but my wiring is all messed up i believe at the helm and up on the deck. in the picture, i traced the wires to the motor and put a red dot on them. so the others go up front somehwere? does anyone have some sort of diagram on this or can tell me a little bit more about what im looking at. Thanks.