[koates]

Hi there, If you read the specifications of those two types of ceramic resistors supplied by various auto houses you will note they are suitable for very specific current draw ranges. One from 2 to 4 amps draw and the other 4 to 6amps draw. Ceramic resistors cannot REGULATE the voltage, they only lower it depending on the current draw of the load being fed. Your gauges require a voltage REDUCED from 12 volts to 6 volts and the voltage to be REGULATED at 6 volts regardless of other loads turned on and off (lights,wipers,heater fan etc) in your vehicle. The requirement for a 6 volt regulated supply is to achieve consistent accuracy readings on your gauges regardless of outside voltage variations. I would not use a runtz on my gauges. Use a single reducer/regulator to supply all three gauges. Macs have one ,part # V12871, same one is also supplied by Dennis Carpenter. OR you can google "Voltage Reducers 12 to 6 volts" on ebay. You need about a 2 to 3 amps capable unit. There are many on here from as low as $3.00 each. That is the best and only way to go. Ceramic resistors are only good for heater fans, w/wiper motors, horns, valve radios etc where a specific current draw of the item can be established..and that way the resistance value in ohms of the resistor can be worked out. Hope this helps you. Regards, Kevin.