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On 24 Mar 2005 at 12:16, Dave Hall wrote: > > And if you want more staying power, parallel a second battery under the > > other side of the rear seat. > > Someplace I have the schematics to do this and wire it so when the > > engine is off, you pull from the aux battery, and when the engine > > starts, it automatically starts recharging off the system. > > I just drive a relay from the blue charging light connection from the VR, right > next to the second battery. That means you only charge the second battery when > the car is actually charging. Best to have a deep-cycle (leisure) battery (not > bike one!). Seems to work fine. Do you then connect all the car's loads, other than the starter, to the second battery, so that the first one is reserved for starting only? -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~