I have a 1997 jetta 1.9 td finally got around to replacing all 4 glowplugs, got it all back together, went to start it up and i get a slow crank now, gauges bouce around, clock reset on the dash, sometimes the alarm even goes off. Could it just be a bad battery? ive only had 2 glowplugs working for the last year maybe doing all 4 new ones is enough draw to expose a bad battery? Even jump starting it doesnt work though so im really not sure what happened here. Should the glowplug bus bar be grounded when hooked up? it seems to be, its not touching anything though besides the glowplugs. Not really sure what to do here.