I have one of the voltage reducing resistors for the 6 volt heater motor But it gets way to hot. So I ordered a 12 volt fan motor but in my 6 volt heater system there is also a fan two speed switch High. Low. With the use of a resistor on the switch. This setup came out of a 1951 car. So. Here it is Does anyone know if I have to change the size of the resistor in order to convert to 12 volt and if so what size. Any help would be great. Thanks again
Resistor use 12 - 6 volt I would advize you to convert your total system to 12 volts wich gives many advantages in future use including a 12 volt heater system. These old fashion ceramic resistors http://www.classicparts.com/1947-59-Ignition-Resistor-Replacement/productinfo/53-911/#.UibYFnM4WUk are really dangerous as they get far to hot , so hot that you can burn your self on them. Upgrading With an 12 -6 volts resistor is posseble using an better product if you want to keep the 6 volts system. This is what i found on EBAY; http://www.ebay.com/sch/i.html?_trksid=p2047675.m570.l1313.TR0.TRC0.XVoltage+reducer+12-+6+volts&_nkw=Voltage+reducer+12-+6+volts&_sacat=0&_from=R40. I have used this model fore years and they are very reliable ;http://www.ebay.com/itm/12-Volt-to-6-Volt-Heater-Blower-Motor-Voltage-Reducer-/350866309222?pt=Vintage_Car_Truck_Parts_Accessories&hash=item51b1430066&vxp=mtr Martinius.
Dropping Resistors FWIW ; You're supposed to place the resistor inside the heater ducting so any time it's working , there's air passing over it ti keep in reasonably cool . That being said , anything made & sold by Runtz is good stuff .
Thanks both of you I did have the type of resistor u posted and I agree it got way to hot. Just bought a 12 volt fan. But the issue I still have in question is that the speed switch also has a resistor. And I need to know can I use it or because I am sending 12 volts through it I need to change the resistor on the switch. And if so do you know what size I would have to use. Thanks so much for your previous reply and any future.
Test it on a 12 volts battery! Hey Skiter Take a battery 12 volts and test the fan before install. You will still need a sirquit resistor as Your wiring system operates on 6 volts ig the fan resistor is`nt reducing from 12-6 volt ? Look at the spesifications of the fan if that is the case! Martinius
