The Stovebolt Site Forums The Shop Area Engine Shop Hooking up an electic choke?

I am installing a pair of Langdon's Carter-Weber's in my 1950 Chevy. I need to run a wire from my 6 volt system to get power to the electric choke. Where should I tap into to get "keyed on" source to run to the chokes. Also, what guage wire should I run.

Thanks,
Chris

What kind of oil pressure gauge you got and is it generator or alternator. Hotrod will be here shortly and tell you a great way to do it.

Be prepared for some pretty slow choke release trying to run 6 volts to those chokes. They're designed for 12 volts, so you'll have about twice as long a release time as is intended. I like to use a mid-1970's Vega fuel pump switch in the oil pressure gauge circuit to turn the choke heater on and off. If the engine stalls during warm-up, the heater doesn't continue to release the choke. A 16 gauge wire is plenty to carry the heater current. I'd reccomend using a wire from the back of the ammeter or the voltage supply wire to the ignition switch, with a 10 or 15 amp inline fuse to provide power to the oil pressure switch.
Jerry

Oil pump sender is mechanical and the car is running a generator.

I realize that the carb are designed for a 12 volt system by Langdon said that they would work fine on 6 volts.

I have dual Carter-Webers on my 6v truck and the chokes work perfectly. Initially, I was also worried about a 6v/12v problem. Maybe the choke opens slower but it is fully open within a minute.

Here is an earlier thread with a part number for a oil pressure switch that works.

This thread discusses the fittings. NAPA has changed their website and that link is no longer good - the part numbers are listed, I think.

Here is the NAPA switch.

Here are tee-fittings that might be needed.
Here is a tee for 3/8" pipe threads.