Where to get 12VDC wire for electric choke? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72farmer · 04-25-2022, 09:05 PM

I just put a new 2 barrel carb. with electric choke on my 79 C10. It had a hot air choke on the old original carb. I have got to find me a switched wire for the choke. Where would be the best place to look for a wire under the hood. Without having to run a wire through the fire wall and find one inside cab.

**cwcarpenter98** · 04-26-2022, 01:04 AM

I'm not sure about all the wiring specifics on a 79, but on my 63, I added an electric choke. I have it wired up with a relay so that the electric choke only functions when the engine is running. I used one of the wires off my alternator, but I'll have to go back and look as it's been a couple years since I did it. It has worked nicely for me

**THI** · 04-26-2022, 09:10 AM

I used the windshield wiper motor 12v supply for the electric choke on my 1978

72c20customcamper · 04-26-2022, 10:16 AM

Not on my truck but I ran a wire from the fuse block ignition plug .

**Corts60** · 04-26-2022, 10:29 AM

Any switched source should be fine except the wire going to the distributor.

Dead Parrot · 04-26-2022, 04:26 PM

Might see if there is a spare wire back where the oil sender normally sits, next to the distributor. On vehicles with electric choke, the choke wire often went though one side of the electric oil sender so the choke coil only got power when there was oil pressure. Might get lucky and the vehicle is already setup for electric even if it came OEM with a hot air version.

Just call me Sean · 04-26-2022, 11:31 PM

Hot in run and start, but not in accessory.

Pontiac1976 · 04-30-2022, 12:55 PM

I would check the fuse box to see if the choke option was hooked up, some time the choke option is on the fuse panel is dead other time it is live on one side you can tap in there.** use the proper fuse size on a spade tap fused wire to the carb. ( if your lucky your truck was hooked up wire was run not used it wrapped in the loom. But if was hooked the wire fire wall was not run you just read above wiring on the engine wire plug connector seal it up pop in fuse in factory fuse holder (choke location) your golden.

**hatzie** · 04-30-2022, 05:06 PM

You could use an oil pressure switch like the TBI systems have for the fuel pump power.
That way it only powers up when the engine is running.

Just call me Sean · 04-30-2022, 07:05 PM

The carbureted ones work the same way, according to the wiring diagram.

04-25-2022, 09:05 PM	#1
72farmer Registered User Join Date: May 2009 Location: Hazel Green AL Posts: 286	Where to get 12VDC wire for electric choke? I just put a new 2 barrel carb. with electric choke on my 79 C10. It had a hot air choke on the old original carb. I have got to find me a switched wire for the choke. Where would be the best place to look for a wire under the hood. Without having to run a wire through the fire wall and find one inside cab.

04-26-2022, 01:04 AM	#2
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,439	Re: Where to get 12VDC wire for electric choke? I'm not sure about all the wiring specifics on a 79, but on my 63, I added an electric choke. I have it wired up with a relay so that the electric choke only functions when the engine is running. I used one of the wires off my alternator, but I'll have to go back and look as it's been a couple years since I did it. It has worked nicely for me __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

04-26-2022, 09:10 AM	#3
THI Active Member Join Date: Jan 2017 Location: Traverse City, MI Posts: 173	Re: Where to get 12VDC wire for electric choke? I used the windshield wiper motor 12v supply for the electric choke on my 1978

04-26-2022, 10:16 AM	#4
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,300	Re: Where to get 12VDC wire for electric choke? Not on my truck but I ran a wire from the fuse block ignition plug . __________________ Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary.

04-26-2022, 10:29 AM	#5
Corts60 Just here to tinker Join Date: Jun 2008 Location: Holland, MI Posts: 3,687	Re: Where to get 12VDC wire for electric choke? Any switched source should be fine except the wire going to the distributor. __________________ 78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(winter unit)https://67-72chevytrucks.com/vboard/...25#post8900725

04-26-2022, 04:26 PM	#6
Dead Parrot Registered User Join Date: Aug 2012 Location: Oklahoma City, OK Posts: 2,512	Re: Where to get 12VDC wire for electric choke? Might see if there is a spare wire back where the oil sender normally sits, next to the distributor. On vehicles with electric choke, the choke wire often went though one side of the electric oil sender so the choke coil only got power when there was oil pressure. Might get lucky and the vehicle is already setup for electric even if it came OEM with a hot air version.

04-30-2022, 12:55 PM	#8
Pontiac1976 Registered User Join Date: Oct 2015 Location: Ottawa, Ontario, Canada Posts: 752	Re: Where to get 12VDC wire for electric choke? I would check the fuse box to see if the choke option was hooked up, some time the choke option is on the fuse panel is dead other time it is live on one side you can tap in there.** use the proper fuse size on a spade tap fused wire to the carb. ( if your lucky your truck was hooked up wire was run not used it wrapped in the loom. But if was hooked the wire fire wall was not run you just read above wiring on the engine wire plug connector seal it up pop in fuse in factory fuse holder (choke location) your golden. __________________ 1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change.

04-30-2022, 05:06 PM	#9
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,927	Re: Where to get 12VDC wire for electric choke? You could use an oil pressure switch like the TBI systems have for the fuel pump power. That way it only powers up when the engine is running. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.



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