""well i have a 99 and the one in dash and the dic light up when perf. shift is on.""

What is the difference 98-99? i've got a 98 gtp, the bulb in the cluster was burnt out, i replaced it, it works--but how can i get the DIC to light up? is there a wire that's missing from the 98 DIC plug? or something else? and how would i go about fixing that so my DIC perf shift lights up? (everything in the DIC lights up when i turn the key, except the perf shift) how can i get that to light?