Blinking lights, 80tq

[be_larson at access-4-free.com]

I am searching for idea's here please, on my 80tq, the
coolant light flashes intermittently, even though the gauge
clearly shows the car is not overheating, bleeding the air
from the system, and filling the reservoir to the top do not
help.  Also, I tried another complete reservoir, and it did
not make any difference.  Any other suggestions other than
banging on the reservoir to loosen a stuck sensor?

Also, when warm, the oil pressure light flashes under
1000-1200 rpm.  Has anyone completely figured out the
low/high pressure warning system on these vehicles, I did
not hook up the RPM input since I am not using the old coil
wiring from the 1988 80q, there are 2 extra green wires, and
a red/? wire that I have not hooked up from the 80 coil
wiring.  My theory is that at warm idle the oil pressure is
below 1.8 bar, and in the absence of the rpm signal, it has
no way to ignore the 1.8 bar sender, and turns on the oil
pressures warning light.  Any recommendation other that
pulling the relay?

Thanks,
Brian
blarson at zeiss.com