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Posts: 15
Joined: Tue Mar 19, 2013 1:43 am
Re: What effect of 12volt batt used on electrical system
I did NOT change my gauges. They worked perfectly through the following 20 years while I put 250,000 miles on the vehicle. I did not change the coil for the first 30,000 miles. The coil never failed, but the points were subjected to too much current and burned up about every 1500 to 2000 miles until I installed two ballast resisters in series on it. The two resisters stopped the burned points, but the engine was more difficult to start. Eventually installed a 12V coil, which still required a ballast resister.
The S120 I have now was converted by the previous owner. He installed voltage converters for the gauges and apparently the wrong ohm rated fuel sending unit(s). The gauge only reads half full when tank(s) are full, and empty when there is still half full, (yes both a right and left tank installed by previous owner, a conversion I also made on my first S120)