The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-30-2010, 04:32 PM   #1
Slow Build
Registered User
 
Slow Build's Avatar
 
Join Date: Sep 2009
Location: California Delta
Posts: 2,151
HEI install question (wiring)

I know this has been somewhat covered, but it's a bit confusing to me.

Doing the swap to HEI distributor slowly. I was wondering if I could do the wiring like I have in the diagram. Remove the 2 wires from the old coil then run new 12 gauge wire from the run terminal of the starter solenoid (where the yellow wire was connected) to the Bat+ terminal on the HEI. It seems to me that since the battery is connected directly to the solenoid with large cable that this would be a good source of 12 volt supply or would I be possibly overloading the wiring inside the solenoid itself. Any thoughts?
Attached Images
 
__________________
Name: Rich
Current Ride: 1964 C-10 Short Fleetside
Daily Driver: 2005 GMC crew cab short fleetside /2001 Chevy Tahoe
Past GM Trucks:
1959 GMC short stepside
1968 GMC short stepside-4x4
1973 Chevy short stepside
1989 Chevy short fleetside-reg cab
1993 Chevy short fleetside-Xcab
2002 Chevy short fleetside-Xcab

Save the dinosaurs, use synthetic oil.

Last edited by Slow Build; 06-08-2010 at 11:59 PM.
Slow Build is offline   Reply With Quote
Old 05-30-2010, 04:59 PM   #2
raycow
Registered User
 
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
Re: HEI install question (wiring)

The "R" on the solenoid terminal doesn't stand for Run. That terminal gets a full 12 volts only when the engine is cranking and is used to bypass the resistance wire used with the stock points system. The resistance wire is the one marked "20-P" on the diagram. You will need to feed your HEI from some point which is hot with the ignition switch on and does not go through the resistance wire.

Ray

Last edited by raycow; 05-30-2010 at 05:05 PM.
raycow is offline   Reply With Quote
Old 05-30-2010, 06:52 PM   #3
Rich 5150 69
Registered User
 
Rich 5150 69's Avatar
 
Join Date: Nov 2009
Location: Galt, Calif
Posts: 2,437
Re: HEI install question (wiring)

I just run the pink wire from the ignition switch to the HEI.
__________________
`64 C10 vortec 350/350/373 posi
`69 RS/SS 350/350/308
`37 Ford 406/350/324 traclock
`68 Dart 370/904/323 suregrip
Rich 5150 69 is offline   Reply With Quote
Old 05-30-2010, 06:55 PM   #4
Slow Build
Registered User
 
Slow Build's Avatar
 
Join Date: Sep 2009
Location: California Delta
Posts: 2,151
Re: HEI install question (wiring)

I knew that was too easy. Electrical ain't my thing.
__________________
Name: Rich
Current Ride: 1964 C-10 Short Fleetside
Daily Driver: 2005 GMC crew cab short fleetside /2001 Chevy Tahoe
Past GM Trucks:
1959 GMC short stepside
1968 GMC short stepside-4x4
1973 Chevy short stepside
1989 Chevy short fleetside-reg cab
1993 Chevy short fleetside-Xcab
2002 Chevy short fleetside-Xcab

Save the dinosaurs, use synthetic oil.
Slow Build is offline   Reply With Quote
Old 05-30-2010, 07:00 PM   #5
Rich 5150 69
Registered User
 
Rich 5150 69's Avatar
 
Join Date: Nov 2009
Location: Galt, Calif
Posts: 2,437
Re: HEI install question (wiring)

Its not mine either unless I have a boat load of instructs...LMAO
You`ll haqve two leads on the HEi one is for Tach, it should be marked on the dizzy cap...
__________________
`64 C10 vortec 350/350/373 posi
`69 RS/SS 350/350/308
`37 Ford 406/350/324 traclock
`68 Dart 370/904/323 suregrip

Last edited by Rich 5150 69; 05-30-2010 at 07:01 PM.
Rich 5150 69 is offline   Reply With Quote
Old 05-30-2010, 07:01 PM   #6
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 11,077
Re: HEI install question (wiring)

I just finished putting an HEI on my 230 six banger this afternoon. Disconnected the yellow wire off the solenoid and the wire off the coil and taped them up real good. Ran a new 12 gauge wire with a 30 amp in line fuse and connected it to an unfused connection on my fuse panel. Fired right up. Set the timing at 12 degrees and went for a spin around the block. Took about 2 hours.
geezer#99 is offline   Reply With Quote
Old 05-30-2010, 10:21 PM   #7
fryer1979
Redneck Hillbilly
 
fryer1979's Avatar
 
Join Date: Jan 2010
Location: Backwoods
Posts: 1,307
Re: HEI install question (wiring)

Every time I have done the swap I usually go to the fuse box and look for an alternated (12 volts with the ignition in the "on" position only) power source that is not shared with any other devices. Once I find an empty lead I just run a wire from that to the power terminal on the HEI. I don't know much yet about our generation trucks, but there should be a good place to get a good alternated power source at or near the fuse box. I've always been told to keep the power lead to the HEI as it's own source, something about attaching other leads causing electrical feedback. I don't know how true this is, but I have always followed this advice and I have never had an issue with any HEI system I instal (and I use them on everything).
fryer1979 is offline   Reply With Quote
Old 05-30-2010, 10:30 PM   #8
Chevy Fleetside
Registered User
 
Chevy Fleetside's Avatar
 
Join Date: Sep 2006
Location: San Francisco
Posts: 4,490
Re: HEI install question (wiring)

Ran mine for over 4 years off of the pink wire from the ignition switch. I usually cut the wire off of a donor car/truck long enough to reach.
__________________
"A man and his truck, what a beautiful thing"

65 Short Fleetside BBC
65 Long Fleetside 283 3 on the tree for now.
my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=259536
Truck pictures: http://s49.photobucket.com/albums/f2.../The%20Trucks/
Chevy Fleetside is offline   Reply With Quote
Old 05-31-2010, 12:29 AM   #9
Slow Build
Registered User
 
Slow Build's Avatar
 
Join Date: Sep 2009
Location: California Delta
Posts: 2,151
Re: HEI install question (wiring)

I should be able to figure it out. I have a few things to do before I stick the HEI in though (switching back to original mechanical oil pressure gauge). I need to put blinders on though. I see lots of stuff I need to do (you know the since I'm doing this I might as well do that syndrome).

Thanks for your help guys.
__________________
Name: Rich
Current Ride: 1964 C-10 Short Fleetside
Daily Driver: 2005 GMC crew cab short fleetside /2001 Chevy Tahoe
Past GM Trucks:
1959 GMC short stepside
1968 GMC short stepside-4x4
1973 Chevy short stepside
1989 Chevy short fleetside-reg cab
1993 Chevy short fleetside-Xcab
2002 Chevy short fleetside-Xcab

Save the dinosaurs, use synthetic oil.
Slow Build is offline   Reply With Quote
Old 05-31-2010, 12:31 AM   #10
Joemomma1
Registered User
 
Joemomma1's Avatar
 
Join Date: Mar 2009
Location: Fresno,CA
Posts: 773
Re: HEI install question (wiring)

Quote:
Originally Posted by Chevy Fleetside View Post
Ran mine for over 4 years off of the pink wire from the ignition switch. I usually cut the wire off of a donor car/truck long enough to reach.
I also used the pink wire but added a 10ga or 12ga wire to the engine harness. Works great.
Joemomma1 is offline   Reply With Quote
Old 05-31-2010, 01:16 AM   #11
raycow
Registered User
 
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
Re: HEI install question (wiring)

Looking at your diagram, I would say the pink wire IS the resistance wire.

Ray
raycow is offline   Reply With Quote
Old 05-31-2010, 01:41 AM   #12
burbguy
Registered User
 
burbguy's Avatar
 
Join Date: Mar 2009
Location: Livermore,Ca.
Posts: 114
Re: HEI install question (wiring)

hey rich bring it over and a six pack of coors light, and I'll give you a hand...
__________________
Shawn

1966 short fleet 230 I-6 three in the tree (daily driver)
1966 short fleet big block th400 (building slowly)
1972 c10 3 door suburban 350 th350 (building faster than slowly)
2004 F250 power stroke (not dependable enough to be a daily driver)
2005 Kenworth T-800 Heavy Haul tractor (that's my true daily driver)
burbguy is offline   Reply With Quote
Old 05-31-2010, 01:50 AM   #13
Slow Build
Registered User
 
Slow Build's Avatar
 
Join Date: Sep 2009
Location: California Delta
Posts: 2,151
Re: HEI install question (wiring)

Quote:
Originally Posted by burbguy View Post
hey rich bring it over and a six pack of coors light, and I'll give you a hand...
Too late. I already got my grubby hands on it. Thanks for the offer though Shawn.
Attached Images
 
__________________
Name: Rich
Current Ride: 1964 C-10 Short Fleetside
Daily Driver: 2005 GMC crew cab short fleetside /2001 Chevy Tahoe
Past GM Trucks:
1959 GMC short stepside
1968 GMC short stepside-4x4
1973 Chevy short stepside
1989 Chevy short fleetside-reg cab
1993 Chevy short fleetside-Xcab
2002 Chevy short fleetside-Xcab

Save the dinosaurs, use synthetic oil.
Slow Build is offline   Reply With Quote
Old 06-09-2010, 12:13 AM   #14
Slow Build
Registered User
 
Slow Build's Avatar
 
Join Date: Sep 2009
Location: California Delta
Posts: 2,151
Re: HEI install question (wiring)

Yes. I'm finally done with the HEI swap. Thanks for all your help guys. I thought I was never going to finish it. Between my daughter needing me so she could beat me on the Wii, my wife and her to do lists, my aching back and that syndrome I talked about earlier, it wasn't easy. I also ended up switching back to the stock gauges and senders, changing from an SP2P intake to a performer and re-routing some of the electical under the hood. Still have a little dialing in to do but it's back on the road again.

Again thanks to everybody for your help.
__________________
Name: Rich
Current Ride: 1964 C-10 Short Fleetside
Daily Driver: 2005 GMC crew cab short fleetside /2001 Chevy Tahoe
Past GM Trucks:
1959 GMC short stepside
1968 GMC short stepside-4x4
1973 Chevy short stepside
1989 Chevy short fleetside-reg cab
1993 Chevy short fleetside-Xcab
2002 Chevy short fleetside-Xcab

Save the dinosaurs, use synthetic oil.
Slow Build is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:30 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com