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A switch is only a break in a wire. If there is a significant voltage drop across it then the switch is no good and should be replaced (it will probably get hot while in use as well!). 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. I think you could verify this by using a nice heavy jumper cable connected between the car and the engine. If this brings the voltage up inside the car, remove it and see if the voltage drops significantly. This would prove a poor electrical connection between the car body and the engine assembly. (connect the jumper cable to nice clean parts of the engine and body for best conductivity!) 71 FB Stephen J. Jackson Commissioning Engineer, Petron Industries, Inc. SJackson@petronworld.com -----Original Message----- From: Steven Cooper [mailto:steven.cooper@optusnet.com.au] Sent: Tuesday, September 19, 2006 3:13 AM To: Type3.org Subject: RE: [T3] Wiring Voltmeter I had thought of doing this, just wondering if there was a simple way which I had missed. What about connecting it to the generator connection on the VR, that way it would measure the charging voltage and not have any effect when the motor isn't running. On the matter of a high resistance in the ignition circuit, my car is an auto so the ignition goes through a switch on the gear selector so you can only start it in N or P. This would add an extra resistance which MT cars wouldn't have. Steven Cooper Australia 71 AT FB Vert ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~