Once again thanks.

Just for confidence, I have checked the current with my other DVM and they were within 0.1mA. Also, on disconnecting and reconnecting the DVM (from being in series with EHA and CIS) with key off and out of ignition, the voltage/current does returns to zero on reconnection.

I also have access to another 300e 1990, but with 12v 103 engine fitted and going to check its EHA currents. Just one potential problem though, its not a very good state of tune and has 300,000miles on the clock but I will see what it brings. This car also has no cat or o2 sensor.



Once again many thanks for your time and trouble.

Tony