Wiring Problem....ignition - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gotmud · 01-14-2004, 08:34 PM

In thread
http://67-72chevytrucks.com/vboard/s...ight=pertronix
I got info on how to wire the ignition. Now that its wiried it seems that it will not send fire to the plugs until after I release the key from start to run. Did I hook the hot wire up wrong?
I attached it to the fuse box where the radio is.
Glenn

**JIMs70GMC** · 01-14-2004, 08:59 PM

I bet the red wire is hooked up to hot in run only not hot in run and start. I believe the radio terminal is hot in run and not start.

gotmud · 01-14-2004, 09:04 PM

Any ideer which terminal is hot for start and run?
Glenn

**JIMs70GMC** · 01-14-2004, 09:19 PM

Don't remember but what you could do is disconnect the coil wire and with a multimeter in hand put the key in run and start and find which terminal is hot. You don't want a terminal that is hot in off or ass. as this will burn up the pertronix unit.

Quagmire · 01-14-2004, 10:52 PM

sounds like you have the wires on the coil swapped. i had this same problem, but it's been so long, i can't remember the exact fix

gotmud · 01-14-2004, 11:15 PM

UGH....this is gonna be frustrating. I cant afford to burn them up. If they go the points will have to go back on. UGH...

Longhorn Man · 01-15-2004, 01:29 AM

IGN UNFUSED is a hot while cranking terminal on your fuse box.

*ILIVE4TRUCKS* · 01-15-2004, 02:57 AM

Purple wire is start and I think yellow is run on the starter

Hooter · 01-15-2004, 03:29 AM

Quote:

Originally posted by ILIVE4TRUCKS
Purple wire is start and I think yellow is run on the starter

yes thats right, as for the fuseblock terminal, I wouldnt use it directly, not enough juice, but I would use it to activate a relay, so then you are sure you are getting pure voltage to you ignition system

mrein3 · 01-15-2004, 10:10 AM

I'd have to look to be sure but I think I used the pink wire on the back of the ignition switch for 12V for my HEI.
If I remember correctly, on the back of the ignition Red is 12V from the battery, pink is 12V with key on or start, purple is 12V when cranking.

Longhorn Man · 01-15-2004, 07:33 PM

That pink wire is where I normally splice in for my HEI, but I always...ALWAYS get flamed when I say this.
The fuse box will be plenty fine onless you are spinning 4500 RPM all the time, and it IS 13 to 13.5 volts there, just not as many amps.

jorgensensc · 01-16-2004, 12:07 AM

I had the EXACT same problem!! Look at this post:
Here
Read the whole thing if you like, or read the second page at what I found to be the solution. I had the pink and brown wire backwards (even though it was hooked up according to wiring diagram.Trust Me, read this post. Hope this helps!!!!
Shawn

01-14-2004, 08:34 PM	#1
gotmud Registered User Join Date: Oct 2003 Location: Cumming, Ga Posts: 234	Wiring Problem....ignition In thread http://67-72chevytrucks.com/vboard/s...ight=pertronix I got info on how to wire the ignition. Now that its wiried it seems that it will not send fire to the plugs until after I release the key from start to run. Did I hook the hot wire up wrong? I attached it to the fuse box where the radio is. Glenn __________________ Glenn Cumming, Ga (68 C/10 Fleetside LWB 307 (64 C/10 Fleetside Shorty Custom 350, with 73 donor parts aplenty) (2001 Porsche Boxster S - 168 MPH of fun) (2005 Chevy Avalanche Z71 1500)

01-14-2004, 08:59 PM	#2
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	I bet the red wire is hooked up to hot in run only not hot in run and start. I believe the radio terminal is hot in run and not start. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

01-14-2004, 09:04 PM	#3
gotmud Registered User Join Date: Oct 2003 Location: Cumming, Ga Posts: 234	Any ideer which terminal is hot for start and run? Glenn __________________ Glenn Cumming, Ga (68 C/10 Fleetside LWB 307 (64 C/10 Fleetside Shorty Custom 350, with 73 donor parts aplenty) (2001 Porsche Boxster S - 168 MPH of fun) (2005 Chevy Avalanche Z71 1500)

01-14-2004, 09:19 PM	#4
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Don't remember but what you could do is disconnect the coil wire and with a multimeter in hand put the key in run and start and find which terminal is hot. You don't want a terminal that is hot in off or ass. as this will burn up the pertronix unit. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

01-14-2004, 10:52 PM	#5
Quagmire A splendid one to behold Join Date: Jan 2004 Location: moore, ok Posts: 251	sounds like you have the wires on the coil swapped. i had this same problem, but it's been so long, i can't remember the exact fix __________________ 67 swb 02 wrx

01-14-2004, 11:15 PM	#6
gotmud Registered User Join Date: Oct 2003 Location: Cumming, Ga Posts: 234	UGH....this is gonna be frustrating. I cant afford to burn them up. If they go the points will have to go back on. UGH... __________________ Glenn Cumming, Ga (68 C/10 Fleetside LWB 307 (64 C/10 Fleetside Shorty Custom 350, with 73 donor parts aplenty) (2001 Porsche Boxster S - 168 MPH of fun) (2005 Chevy Avalanche Z71 1500)

01-15-2004, 01:29 AM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	IGN UNFUSED is a hot while cranking terminal on your fuse box.

01-15-2004, 02:57 AM	#8
ILIVE4TRUCKS AKA Phillip Johnson, AKA BANNED! Join Date: Sep 2001 Location: Grants Pass, Oregon Posts: 94	Purple wire is start and I think yellow is run on the starter

01-15-2004, 10:10 AM	#10
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,254	I'd have to look to be sure but I think I used the pink wire on the back of the ignition switch for 12V for my HEI. If I remember correctly, on the back of the ignition Red is 12V from the battery, pink is 12V with key on or start, purple is 12V when cranking. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

01-15-2004, 07:33 PM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	That pink wire is where I normally splice in for my HEI, but I always...ALWAYS get flamed when I say this. The fuse box will be plenty fine onless you are spinning 4500 RPM all the time, and it IS 13 to 13.5 volts there, just not as many amps.

01-16-2004, 12:07 AM	#12
jorgensensc Registered User Join Date: Jul 2003 Location: Cypress, Tx Posts: 4,005	I had the EXACT same problem!! Look at this post: Here Read the whole thing if you like, or read the second page at what I found to be the solution. I had the pink and brown wire backwards (even though it was hooked up according to wiring diagram.Trust Me, read this post. Hope this helps!!!! Shawn __________________ 1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE

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