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#1
06-02-09, 20:36
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Ross
Many older vehicles can be converted from +ve earth to -ve earth by changing the battery around, and re polarising the field magnets in the generator ( as simple as wiping a wire,hooked to the new live terminal of the battery, to the little terminal of the generator)Any alternator is not able to be changed easily. Instruments are not usually polarity sensitive, but some are.Generally speaking, fuel, temp, ampmeter,and oil pressue gauges are not polarity sensitive. Its generally the charging system that needs the attention. repolarising the 'fields" as I have just mentioned is all that is needed, but it must be done immediatley after the battery is reversed, and before the engine is run up. Otherwise the regulator and generator will burn out. Usual warnings, Check with an auto electrician.
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... Last edited by Lynn Eades; 06-02-09 at 20:39. Reason: adding disclaimer 
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#2
06-02-09, 22:32
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Ross Bartling
Thanks Lynn for the info. It's just the guages that I'm concerned with right now. So, I think I'll just try them as normal (but with an inline fuse just for insurance) and see if they work. Guess that will tell the tale won't it...
Ross
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#3
07-02-09, 00:41
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Dash Gauges - 6 to 12 volt conversion
Ross,
It's your system but before you go ahead please consider the following: To be able to use your original dash gauges with a new 12 volt system you will need to install a voltage reducer such as a Runtz tranistorized voltage reducer on each electrical dash gauge except the Amp gauge. A Voltage gauge simply needs to be "tweaked" to work in a 12 volt system. Using these will provide you with accurate gauge readings as well as prevent them from being damaged from excessive amperage or inaccurate voltage. Regards, Jim
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Hybrid Mode
