Powering electric choke
Thread Starter
|
Senior User
Joined: Sep 2009
Posts: 106
Likes: 0
Powering electric choke
1965 F250 4x4... I need 12 volt power that is ignition controlled ,for the electric choke on the carb. I know there is a post at the back of the switch itself, but I do not want to overload the switch. This must be a fused source. Any suggestions? I tried searching previous posts but didnt find this exact question. I did see something about avoiding the selenoid as a source... Thanks Roger
Logistics Pro
Joined: Feb 2000
Posts: 3,565
Likes: 9
From: Sun River St. George
I use a ignition switched 12v source and the post on the switch is good one. You should use this source for power to switch on a 40 amp Bosch relay that then powers the choke. This way you are not adding a load to the switch and you get real 12v power for the choke. This deal works for any accessory that needs clean 12v power using our 48yo+ switches. Like the brighter brights deal for headlights or the 12v requirements of pertronix or an HEI. IMHO!
Thread Starter
|
Senior User
Joined: Sep 2009
Posts: 106
Likes: 0
William ... I will be putting in a petronix system...will this need a seperate relay...Coming off the back post of the ingitionswitch are two wires...One is the cigarrette lighter...the other is maybe wipers?..I dont remember. I was afraid to add a third draw off the switch..what do you think??
Thread Starter
|
Senior User
Joined: Sep 2009
Posts: 106
Likes: 0
The four posts on the relay would be.....1 to alternator...1 to keyed..souce....1 to ground...1 to electric choke?..
Trending Topics
Lead Driver
Joined: Oct 2004
Posts: 8,062
Likes: 35
From: Central Oregon
You need a 12v source that turns off with the key, you do not want to have full 12v all the time; it will drain the battery.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Posting Guru
Joined: Mar 2006
Posts: 1,182
Likes: 1
Depends on which one you get. The original Ignitors DO NOT take 12v.
Lay out everything you are planning to do electrically first- then figure out what sort of ground work you need to lay in order to support it.
my personal opinion- running a relay just to power your electric choke is overkill.
Logistics Pro
Joined: Feb 2000
Posts: 3,565
Likes: 9
From: Sun River St. George
A 12v switched source from anywhere turns on the relay (almost zero amperage necessary). One wire to ground from the relay. This circuit runs the relay. A solid 12v source (regulator, solenoid, alternator, battery) to the relay and out the other side to the work, in this case the choke or whatever you want to run with battery voltage. You can use larger wires for the work circuit ( I like 14 gage) and smaller to run the switched relay circuit, say 18 gage. The advantage is if something bad happens on the work circuit (like choke shorting out), the 48 year old ignition switch is not affected. Buy a relay and experiment using a test light and battery. After you figure it out lay out the circuit the way you want it. I have hung relays in the engine compartment, on the core support and under the dash. They are tough, reliable and cheap. I do use relays on Pertronix Ignitors, HEI and DUI systems. Really this stuff is easy once you experiment with it a bit. rwkinch, I'd use the starter solenoid Positive post if I were you. IMHO!
Thread
Thread Starter
Forum
Replies
Last Post
ozark1
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
7
Apr 7, 2016 12:27 PM
Quantum77
1973 - 1979 F-100 & Larger F-Series Trucks
9
Nov 20, 2010 08:37 PM