Markmartin01
Newbie
So over 4 days of wiring and work I have surmised that the intellitronix digital cluster for 88-91 as packaged does not work for 88-91. The speed wire requires a speed buffer box that didn't start until 92, the truck will not charge a battery as the original cluster charge light bulb is part of the circuitry to charge the battery, etc etc. It just doesn't work. I got my hands on the speed buffer box and wired it correctly but speedo still doesn't work. It's WAY too bright for night driving even with the 50% trigger tied to illumination. Just thought I'd save you guys some headache before you went down the road I did. Now to undo 4 days of harness hacking to get the original cluster back into working order so the truck is driveable again. Oh yeah, no turn signal indications either so the flashers go crazy. So much fail in one unit....