hillbillytim,

Welcome to the bolt!!!

Ceramic voltage drops that are commonly sold throughout auto parts stores typically have a 40% error rate.That may not have much of an effect on a heater blower motor that runs on 10 amps of current,but it is a heck of a lot to a fuel gauge that runs on just a quarter of an amp.The ceramic voltage drops also develop a lot of heat which is why the are encased in ceramic. Use caution where it is mounted.

You may find other types of reducers at auto stores or radio shacks. While some may work ok they are not designed accurate enough for dash gauges and do not have the circuit protection of a RUNTZ reducer. If you are reducing voltage for gauges, use a Runtz EL311, they are around 15.00 DO not use this type for the amp gauge as that gauge is not voltage senative.

Hope this helps,
Dave

Dave