firewall

1989 yj, the wire bundle threw the firewall just over the trans tunnel.... 4.2 manual where do i find wire info? need color and what they do or where to find... 1989 yj 4.2 MANUAL THANK YOU IN ADVANCE..MY FIRST POST ALSO I PLAN TO BE HERE ALLOT, 1989 4.2 BA10/231 TO 1999 4.0 AX15/231