Hud

Hello all, i'm having a issue with my hud, i've searched many forums and didn't see anything close to what i have going on. heres the deal......its a 93 bonne ssei,had the tranny rebuilt over a year ago, well the car sat all winter during this process,when i got it back the hud is just going whacky.....all lit up(every light on it) and just flickers non stop.also has a very noticible humming noise when dimming is all the wat down.i've recently changed the ecu (due to some other issues...draining battery, few stalling incidents and cutting out during hard accelerations -problems solved-fuel pump getting weak , auto leveling constantly running, and probably some codes that were uncleared).honestly i was hoping the ecu would fix the hud, but nothing changed....well the mph on the hud does work the first time i drive it after having the battery unhooked,but all other lights are still lit up,then after shutting off and restarting it goes back to every thing lit up.i've checked all grounds, not ground buss's.will check them tomorrow..is there a hud module???another thing i'm not sure if its related or not.........my keyless entry will only sometimes work if i hold it near the bottom of the dash-pass side.and the interior lights go off as soon as i shut the drivers door, when shutting the pass side door the lights stay on for minute or so like they should. everything else on the car works fine.any one have any ideals i would greatly appreciate it and if i can help anyone with the headaches i've had i'm more than willing to share them,thanks all and be safe