My buddy bought a 93 cluster and it has that extra yellow plug in the middle and it dosent function as what a 91 should this is probably the same for the 88-89 civic/crx to 90-91. Well what my questiion is what do u have to rewire to make it function right. I searched but cant find any thing.

 

that might be for abs ? i'm not sure....

 

it might be the one my buddy has doesn't have abs but is there a diagram or does some one know how to make all the lights work on the cluster

 

Yellow cluster plugs usually mean SRS.

 

If I recall correctly, its part of the cruise control lighting/switch