might be doing this backwards but gonna kill time while my car is gettin worked on, i've seen the S4 to S5, but bout S5 to S4? haven't seen any layouts for this and i've serached and have the other threads reserached. came with the harness, so i thought i'd kill time while with this lil project. cluster and wires are from a 89 GTU and going into a 88 TII.

diddy

 

Icemark has posted the rearrangement of the wires in the connectors once before, if memory serves.

You can just go to the wiring schematics for series four and five and figure it out.

 

colors look to be different for the s5 harness i have and the s4 demonstrated. i've bookmarked the posts he has answered on.