I have a 1988 Bobcat that the engine warning light dimly flickers, I checked the oil pressue with a manual gauge nit has 65 lbs at idle (not completely warmed up engine) of course the oil sending unit is out, and the light is doing the same flickering,I grounded the wire that goes to the sending unit I removed and the light brightens, so I think that circut is good. What else is tied into this light and where is it located on the equipment ? Don't know if I am to post my e-mail address here so I will just check back and see if the answer appears Thanks