How to wire up an electric choke

J3

J3

Greasemonkey
Jan 1, 2009
134
16
East TX
Re: electric choke

Trying to wire up my electric choke and I want to go with the oil pressure switch route. I've already got a pressure sender and gauge, so could I use a 2 terminal switch like the one below since I don't need the light? Or would that not work correctly?

 
Bonnewagon

Bonnewagon

Geezer
Sep 18, 2009
6,981
113
Queens, NY
Re: electric choke

That depends on if it's normally open or closed. You want it to be normally open, so it closes when oil pressure in present, and opens when there is not.
 
J3

J3

Greasemonkey
Jan 1, 2009
134
16
East TX
Re: electric choke

Hmmm... Guess I'll see what I can find out about this switch then...
 
Bonnewagon

Bonnewagon

Geezer
Sep 18, 2009
6,981
113
Queens, NY
Re: electric choke

Just give it a continuity test. In your hand you want it to be "open". The switches used for idiot lights are normally "closed" so when there is no oil pressure, the OIL light goes on.
 
R

richp85elco

Master Mechanic
Feb 3, 2011
409
0
Long Beach, CA
I just spliced into brown wire from alt then to choke, and works perfect. my brown wire (gen light) goes to my pressure swtich which i just have connected and hanging (not installed). I think I will be using your relay diagram to run my electric fans. I want one speed on all times then a temp switch and relay to turn on the second speed at 205. Thanks
 
O

o'mally

Not-quite-so-new-guy
Oct 30, 2012
24
0
this is the old topic, however I have a new question for it. I am having wiper issues and choke issues and the joke is wired into the wipers. so I have a good to do the relate which method here. . however at my local parts store they are either had turn signal hazard relay or a4 prong relay. so I purchased the four prong relay. it has a terminal for the horn or lights it says. A terminal for the relay ground. A terminal from switch and terminal from power source. Will this reelay work. I take it the power source would come from the alt. The ground would be any ground or body ground. So the wire going to the choke would be which one presuming this will work. Thank you.
 
skulledmonte84

skulledmonte84

Master Mechanic
Feb 7, 2014
427
16
near Clearfield pa
This is pic of the 1984 Monte Carlo fuse panel lay out,The red circle is were i got my choke wire plugged into,it will say ACC

For the spot on the choke housing "Edelbrock" the yellow wire is the choke Wire it's ran along the top of the intake then goes into my main harness into the firewall an black is just grounded to the choke housing
 

Attachments

bill

bill

Comic Book Super Hero
Jul 11, 2008
2,556
38
southside va/lake gaston
Great advice Joe....thanks!
 
88Classic

88Classic

Apprentice
Jan 9, 2011
83
6
Lansing, IL
Re: electric choke

You need a switched 12v + so the wiper motor is pretty common. One of the wires off the alternator should be switched as well.
Yup, when I had my QuadraJet rebuilt they converted it to an electric choke, so I used the wiper motor to tap into the 12V+
 
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