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On 19 Sep 2006 at 10:33, Steve Jackson wrote: > You may have a grounding problem between the > engine and the chassis which would result in a voltage drop and a corresponding > difference in the voltage at the engine vs. what you get inside the vehicle. This could certainly be part of the problem, but the easy way to check for it is to just measure the voltage difference between engine ground and chassis ground with the engine running. It should be vanishingly small; probably less than 50 mV. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~