That's a new one on me. I thought that the chemical reaction in the sensor created a low voltage and transmitted that to the brain.

Please explain further.

I did ground the wire to the oil temp sensor, simulating a cold engine. This caused the brain to go to a constant 60% like it should, so maybe it's still got some intelligence. It warms up and then (today) fluctuates between 60 and 70%.

We are just off Sleepy Hollow Road, close to Congressional School, just west of Seven Corners.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe