sending unit

So I went back to work on it today and got sidetracked a little...pcv is really noisey..see sb forum..then I realized I could have a ground problem since the gauge assembly grounds thru the screws that hold it in..since the fuel/g isn't working nor is the heat gauge I figure a prob with ground or v/limiter..now is a good time to put in another gauge assembly since I found one some time ago.i changed out a speedo today in new cluster and cleaned the board and nuts and bolts..tomorrow ..chasing too many goblins..j