It doesn't matter if you have them plugged, the point is that you can bleed the air out of the top one. It is directly under the thermostat. If you do have air in there you can do damage trying to run it that way.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!