Okay so I have a 1988 2.5l 4x4 (231) I just did the cluster swap and installed new senders so all gauges work. My problem is when I shift into 4wd I can hear it shift and feel it being engaged when I drive but my indicator light doesn't come on. I asked the guy who I got the cluster from if he knew wether the original vehicle had a 242 or 231 tcase he is unsure since he got it from a friend and installed it in his 2wd then he gave it to me. So any help as to why the light doesn't work.