Info. center in daytona going crazy!!

[Lee'sdaytona]

Hello. I have an 87 daytona Pacifica turbo 1. The message center that is next to the factory boost gague started acting a little crazy. Since I have had the car, the low fuel light would come on when there was low fuel, like it is supposed to, but then flash off and come back on a minute or so later. Now, the washer fluid sign came on and I had a full tank of washer fluid. Ok so I replaced the entire unit. The replacement still made the washer fluid light come on but this time, at night when the headlights were on, the little car and the little gas pump did not light up. Also, the door open indicators didn't work. I tried replacing bulbs, but that didn't fix it. I went to the junkyard and got one from an 88 daytona. That one, got rid of the washer fluid light and the door open indicators worked again. So it looked like I was off to a good start. But at night it still is not lighting up. I have a replacement plug that I could splice in there but will that fix it? My logic module is new....So what is it?
Any help would be appreciated...