Electrical ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

My Boy's Toy · 07-06-2003, 09:05 PM

I'm hooking up The wires in the Engine comp. on my 67 . It was a 6 Cyl. now a 327 . Out of the top Elect. plug I've have 5 Wires , Tan - Brake Switch , Green - Temp Sw. , Purple - Starter , White to Yolow - Starter , Then I have a 12 Gauge Pink Wire that comes out of the same slot as the white wire . can anyone where this went , my wire diagrams don't show it , thanks Paul

Longhorn Man · 07-06-2003, 11:22 PM

Did this truck have daul batteries by chance?

My Boy's Toy · 07-07-2003, 06:34 AM

longhornmail , no daul Batteries. Do you think I'd be able to use it for my HEI Ignition ?

Longhorn Man · 07-07-2003, 07:02 AM

If it is controlled with the ignition switch, and has a full 12 volts...go for it.
I'm still trying to think of what it could be.

My Boy's Toy · 07-07-2003, 08:48 AM

Checked the one on a 68 & it's not there , I'll have to check out a frends 67 & see if his has one.

fatfords · 07-07-2003, 10:01 AM

I don't know what the wire was for originally, but like longhornmail said, if it has the full 12 volts (with the key in the "start" and "run" positions) it should work great!

If is is powered correctly, start pulling fuses with the key in "run" to see which one provides the power. This may give you some more clues.

Good Luck!

Blue68 · 07-07-2003, 04:15 PM

I'd say it's the HEI. The white wire was/is the resistance wire for the points ignition. This may be coincidence, but if you get a pigtail from Summit for HEI, the wire will be pink.

71GMC_3/4T · 07-07-2003, 07:29 PM

Pink on GM is Ignition. However, I'd check to see if it is hot when the switch is in the Start position.

Longhorn Man · 07-07-2003, 11:47 PM

71GMC_3/4T, if it is original than you are right...pink is ignition, but it should not be out to the engine.
After re-reading the original post, is this pink wire coming out the back of the fuse box and sharing teh same slot that the white cloth covered wire is coming from?
If so, it is some one's attempt for the HEI wire.
mine was wired like that when i got it, but it wasn't done very well and fell out about 6 months ago or so.

beau396 · 07-08-2003, 02:00 AM

I have a '67 and it does not have a pink wire in the engine harness. However some of the auxillary add on wiring, such as the TH400 kickdown switch, are pink coming from the fuse block taps inside of the cab and then it turns to orange at the pedal switch. If it is in the engine harness then it is probably a HEI wire that somebody added at some point.

My Boy's Toy · 07-08-2003, 06:38 AM

The wire is coming out ot the engine side of the top block with the cloth covered white wire , it still has the wraping on it , not tape. Ill try to get a pic soon , Thanks

Blue68 · 07-08-2003, 10:07 AM

Just FYI....you can pull the wire and male spade out of the block and replace it with a new spade and a new wire. You can even reuse the connector if you REALLY want to, or you can get new ones for a variety of sources, including Pep Boys.

I'm adding and replacing wires in my harness off the existing bulkhead so the fuel pump, choke, torque converter lockup all go through the bulkhead connector instead of through holes in the firewall.

My Boy's Toy · 07-08-2003, 05:27 PM

Here are a few pictures of the wires I'm talking about. They might be a little dark but you should be able to make them out.

Blue68 · 07-08-2003, 06:07 PM

Yep, that would be the ignition. The white is a resistance wire and the pink would go to either an HEI or after market distributor that takes full 12 volts. This is all based on the pink wire not going anywhere else of course. It is a way to get ignition hot to somewhere without running from the fuse block, just not a good one.

07-06-2003, 09:05 PM	#1
My Boy's Toy Registered User Join Date: Dec 2001 Location: West Unity, OH, USA Posts: 235	Electrical ? I'm hooking up The wires in the Engine comp. on my 67 . It was a 6 Cyl. now a 327 . Out of the top Elect. plug I've have 5 Wires , Tan - Brake Switch , Green - Temp Sw. , Purple - Starter , White to Yolow - Starter , Then I have a 12 Gauge Pink Wire that comes out of the same slot as the white wire . can anyone where this went , my wire diagrams don't show it , thanks Paul

07-07-2003, 10:01 AM	#6
fatfords Registered User Join Date: Sep 2002 Location: DFW, TX Posts: 350	I don't know what the wire was for originally, but like longhornmail said, if it has the full 12 volts (with the key in the "start" and "run" positions) it should work great! If is is powered correctly, start pulling fuses with the key in "run" to see which one provides the power. This may give you some more clues. Good Luck! __________________ '56 F-100 (w/all GM stuff) Lookin' for another parts chaser! '05 GMC crew cab

07-07-2003, 04:15 PM	#7
Blue68 Registered User Join Date: Apr 2000 Location: Frisco, Tx, USA Posts: 606	I'd say it's the HEI. The white wire was/is the resistance wire for the points ignition. This may be coincidence, but if you get a pigtail from Summit for HEI, the wire will be pink. __________________ http://home.comcast.net/~r.landrum/w...tos.html-.html '68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades.

07-07-2003, 07:29 PM	#8
71GMC_3/4T Weapons Of Construction Join Date: Apr 2000 Location: Colorado, USA Posts: 1,095	Pink on GM is Ignition. However, I'd check to see if it is hot when the switch is in the Start position. __________________ 1971 GMC 2500, 402/TH400 4.10 Daily Driver Lafayette, CO

07-08-2003, 02:00 AM	#10
beau396 Registered User Join Date: Nov 2002 Location: oak harbor wa Posts: 61	I have a '67 and it does not have a pink wire in the engine harness. However some of the auxillary add on wiring, such as the TH400 kickdown switch, are pink coming from the fuse block taps inside of the cab and then it turns to orange at the pedal switch. If it is in the engine harness then it is probably a HEI wire that somebody added at some point. __________________ '67 C10 short box fleet side wood bed small rear window frame off restoration. 396BB,Th400, ps, pwr disc 5 lug, posi 3.07, 2000 Suburban 60/40 pwr seats, 2.5" front drop 4" rear, powder coated running gear.

07-06-2003, 11:22 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Did this truck have daul batteries by chance?

07-07-2003, 06:34 AM	#3
My Boy's Toy Registered User Join Date: Dec 2001 Location: West Unity, OH, USA Posts: 235	longhornmail , no daul Batteries. Do you think I'd be able to use it for my HEI Ignition ?

07-07-2003, 07:02 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	If it is controlled with the ignition switch, and has a full 12 volts...go for it. I'm still trying to think of what it could be.

07-07-2003, 08:48 AM	#5
My Boy's Toy Registered User Join Date: Dec 2001 Location: West Unity, OH, USA Posts: 235	Checked the one on a 68 & it's not there , I'll have to check out a frends 67 & see if his has one.

07-07-2003, 11:47 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	71GMC_3/4T, if it is original than you are right...pink is ignition, but it should not be out to the engine. After re-reading the original post, is this pink wire coming out the back of the fuse box and sharing teh same slot that the white cloth covered wire is coming from? If so, it is some one's attempt for the HEI wire. mine was wired like that when i got it, but it wasn't done very well and fell out about 6 months ago or so.

07-08-2003, 06:38 AM	#11
My Boy's Toy Registered User Join Date: Dec 2001 Location: West Unity, OH, USA Posts: 235	The wire is coming out ot the engine side of the top block with the cloth covered white wire , it still has the wraping on it , not tape. Ill try to get a pic soon , Thanks

07-08-2003, 10:07 AM	#12
Blue68 Registered User Join Date: Apr 2000 Location: Frisco, Tx, USA Posts: 606	Just FYI....you can pull the wire and male spade out of the block and replace it with a new spade and a new wire. You can even reuse the connector if you REALLY want to, or you can get new ones for a variety of sources, including Pep Boys. I'm adding and replacing wires in my harness off the existing bulkhead so the fuel pump, choke, torque converter lockup all go through the bulkhead connector instead of through holes in the firewall. __________________ http://home.comcast.net/~r.landrum/w...tos.html-.html '68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades.

07-08-2003, 05:27 PM	#13
My Boy's Toy Registered User Join Date: Dec 2001 Location: West Unity, OH, USA Posts: 235	Here are a few pictures of the wires I'm talking about. They might be a little dark but you should be able to make them out.

07-08-2003, 06:07 PM	#14
Blue68 Registered User Join Date: Apr 2000 Location: Frisco, Tx, USA Posts: 606	Yep, that would be the ignition. The white is a resistance wire and the pink would go to either an HEI or after market distributor that takes full 12 volts. This is all based on the pink wire not going anywhere else of course. It is a way to get ignition hot to somewhere without running from the fuse block, just not a good one. __________________ http://home.comcast.net/~r.landrum/w...tos.html-.html '68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades.

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