Replacing original wiring - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GrungyCoin · 09-07-2002, 01:54 AM

I would like to go thru and replace all the wiring in my '67 K10. Painless wiring has a universal kit. I was just wondering how well it works, and the ease of installation. The other part of this is would it be worth the money to buy the reproduction wiring harnesses from LMC, it appears from their catalog that I would have to get 12 different harnesses. It would be great to hear from people who have done it, and the pros and cons of each, or even if there is a better wiring kit to get. A more distant goal is to put tuned port injection on a 283. Is this feasible? I really did like the 283 I had in it, it was balanced, "300 horse cam" (not sure on that), camel back heads(I don't recall the itake valve size), edelbrock performer intake, Holley 600cfm carb. Currently I have a 350 crate engine. I believe the 283 preformed better that than this stock 350 does. The reason I asked about the fuel injection is If I do all the new wiring how much of it will I have to splice into to make the fuel injection. Just trying to get the ducks in a row.

'67 K10 damn near stock, lookin to take the best of then blend it with the best of now, and see what comes out

bigvinnie · 09-07-2002, 03:24 AM

A healthy 350 is easier to make power with than a 283.... more cubes = more power potential. I've heard good things about Painless and also Ron Francis Wire Works.... LMC seems to be higher priced than most, and 12 harnesses seems unnecessary. You can buy a harness made for a fuel injection swap also... good luck.

PanelDeland · 09-07-2002, 08:25 AM

I would talk to Ron Francis and Painless.Tell them your overall plan and see if they can set you up with a harness to run what you currently have and later add the Injection. If they have all the info they should be able to accomodate your needs.It will probably cost a few $$$ more to begin with but if it works out to be Plug & Play, you will be miles ahead in the end.

MOTHERTRUCKERS · 09-07-2002, 09:56 AM

Try gmcpauls he has the wiring you need at a much lower price than LMC or us.

JJ · 09-07-2002, 12:30 PM

The wiring harness for the TPI is a stand alone unit, it has no effect on the original harness. All the pieces you would need for the TPI harness will come with it.

chevy2racr · 09-07-2002, 12:34 PM

Painless has a Kit just for 67-72 Chevys, they have a 12 circut and a 18 circut if I rember right, looks like all connectors and everythign, thats what I'm plannin on for the stepside..
bryce

GrungyCoin · 09-07-2002, 04:00 PM

Thanks for all the great advice!! I'm headed out to check out the local dealer for Painless. You all are great!!

nosto · 09-07-2002, 09:12 PM

I just (well, almost) finished a Painless rewire job on my '67 C-10 (carbed 350/4spd) last weekend. Still running a few left over wires. I bought the '67-'72 version, got it from Jegs. Had to read the instructions over a couple of times, but did not have any problem with the installation.

If only they could print the wire labels a little BIGGER!!! This old fart had to use a magnifying glass to read them, LOL.

Blackhawkdc · 09-07-2002, 11:59 PM

I also have used the Painless Kit for my '69. It uses all factory connectors, the only difference is the fuse block is the newer blade fuse style. I got the 18 circuit kit, so I have a few wires left over, but I might use them for things other than designed. Very complete kit, nice to have each wire labeled as to what it goes to. And not juse on one end or the other, but the entire length. It coincides with factory wiring colors too.

One thing I recommend though is getting a bunch of convulated tubing, a few various sizes. Wrap the wires in that tubing, it just makes it look so much cleaner. you'll get tons of compliments on how clean the wiring is with the tubing over it. I only have a 4 inch section exposed right off the fuse block. The rest is covered. Helps protect the wiring also. Less chance of it rubbing on the frame or something else.

If you've got any questions at all, ask away. I'll help ya any way I can. I'm kinda an electrical specialist, not by choice, at a shop.

Seth Petro

God bless America

dhenthorn · 09-08-2002, 12:13 AM

I ordered 3 wiring harnesses from GMC Paul. One was for the 350 w/ HEI, other one was for the headlights for my 69 GMC and the third was for the A/C harness. All three fit like a glove. Paul did an excellent job of wlking me thru the order to make sure I got what I needed. My vote to GMCPaul.

09-07-2002, 01:54 AM	#1
GrungyCoin Registered User Join Date: Sep 2002 Location: Buckley, WA Posts: 22	Replacing original wiring I would like to go thru and replace all the wiring in my '67 K10. Painless wiring has a universal kit. I was just wondering how well it works, and the ease of installation. The other part of this is would it be worth the money to buy the reproduction wiring harnesses from LMC, it appears from their catalog that I would have to get 12 different harnesses. It would be great to hear from people who have done it, and the pros and cons of each, or even if there is a better wiring kit to get. A more distant goal is to put tuned port injection on a 283. Is this feasible? I really did like the 283 I had in it, it was balanced, "300 horse cam" (not sure on that), camel back heads(I don't recall the itake valve size), edelbrock performer intake, Holley 600cfm carb. Currently I have a 350 crate engine. I believe the 283 preformed better that than this stock 350 does. The reason I asked about the fuel injection is If I do all the new wiring how much of it will I have to splice into to make the fuel injection. Just trying to get the ducks in a row. '67 K10 damn near stock, lookin to take the best of then blend it with the best of now, and see what comes out

09-07-2002, 03:24 AM	#2
bigvinnie Registered User Join Date: Aug 2001 Location: escondido, ca 92026 Posts: 1,222	A healthy 350 is easier to make power with than a 283.... more cubes = more power potential. I've heard good things about Painless and also Ron Francis Wire Works.... LMC seems to be higher priced than most, and 12 harnesses seems unnecessary. You can buy a harness made for a fuel injection swap also... good luck. __________________ '72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA 72 Stepside Project

09-07-2002, 08:25 AM	#3
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	I would talk to Ron Francis and Painless.Tell them your overall plan and see if they can set you up with a harness to run what you currently have and later add the Injection. If they have all the info they should be able to accomodate your needs.It will probably cost a few $$$ more to begin with but if it works out to be Plug & Play, you will be miles ahead in the end. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

09-07-2002, 09:56 AM	#4
MOTHERTRUCKERS Registered User Join Date: Dec 1999 Location: BRADENTON FLA Posts: 3,269	Try gmcpauls he has the wiring you need at a much lower price than LMC or us. __________________ Rest in Peace Ed. Thanks for all the good times.

09-07-2002, 12:30 PM	#5
JJ Lurking Member Join Date: Feb 2000 Location: Forest Grove, OR USA Posts: 196	The wiring harness for the TPI is a stand alone unit, it has no effect on the original harness. All the pieces you would need for the TPI harness will come with it. __________________ JJ 72 GMC 1500 350 4 Speed, stone stock baby!!!!! 72 GMC K-2500 350TPI 700R4 For those who fought for it, Freedom has a flavor the protected will never know.

09-07-2002, 12:34 PM	#6
chevy2racr So Many Ideas, So Little Money Join Date: Sep 2001 Location: Marshalltown, IA Posts: 1,610	Painless has a Kit just for 67-72 Chevys, they have a 12 circut and a 18 circut if I rember right, looks like all connectors and everythign, thats what I'm plannin on for the stepside.. bryce __________________ 72 Blazer 3/4 ton running gear 4.10s NP205/TH350 350 4in lift half doors 71 C10 with 454 99 S-10 5.1L SBC 700R4 09 Malibu Marshalltown, Iowa

09-07-2002, 04:00 PM	#7
GrungyCoin Registered User Join Date: Sep 2002 Location: Buckley, WA Posts: 22	Thanks Thanks for all the great advice!! I'm headed out to check out the local dealer for Painless. You all are great!!

09-07-2002, 09:12 PM	#8
nosto Flamin' Bass Join Date: Aug 2001 Location: Galloway, NJ, US Posts: 315	I just (well, almost) finished a Painless rewire job on my '67 C-10 (carbed 350/4spd) last weekend. Still running a few left over wires. I bought the '67-'72 version, got it from Jegs. Had to read the instructions over a couple of times, but did not have any problem with the installation. If only they could print the wire labels a little BIGGER!!! This old fart had to use a magnifying glass to read them, LOL. __________________ Rick Olson /nosto/ Galloway, NJ Pics : http://community.webshots.com/user/nosto53 1972 Triumph TR6 - full resto, now with a Toyota 5-speed 1975 F**D F-100 - rusty, but reliable 1982 HD XLH-1000 1967 C-10, shortstep, 350/M21 4spd, nitrogen tank fills fast bags on 4 corners, Toyo 255/45X20s on American Eagle 221 20X8s, shaved locks and handles, antenna, fuel filler, tiny C-notch, rear fuel tank, long headers, Edelbrock, worn 600 Holley, Checkmate flush hard cover, rear pan, custom LED taillights - painted it, too! But don't like it so I'm gonna do it again!!

09-07-2002, 11:59 PM	#9
Blackhawkdc 440 american Horses Join Date: Mar 2001 Location: Anoka, MN USA Posts: 470	I also have used the Painless Kit for my '69. It uses all factory connectors, the only difference is the fuse block is the newer blade fuse style. I got the 18 circuit kit, so I have a few wires left over, but I might use them for things other than designed. Very complete kit, nice to have each wire labeled as to what it goes to. And not juse on one end or the other, but the entire length. It coincides with factory wiring colors too. One thing I recommend though is getting a bunch of convulated tubing, a few various sizes. Wrap the wires in that tubing, it just makes it look so much cleaner. you'll get tons of compliments on how clean the wiring is with the tubing over it. I only have a 4 inch section exposed right off the fuse block. The rest is covered. Helps protect the wiring also. Less chance of it rubbing on the frame or something else. If you've got any questions at all, ask away. I'll help ya any way I can. I'm kinda an electrical specialist, not by choice, at a shop. Seth Petro God bless America __________________ Seth Petro 1969 Chev Short Step 425hp 350, TH400, big tires, fast truck 1979 Pontiac Trans Am 1991 Saturn SL1 - gas mileage! (and free) 1977 Buick LeSabre - for sale May America bless God, and may God bless America

09-08-2002, 12:13 AM	#10
dhenthorn Registered User Join Date: Jul 2000 Location: Wasilla, Alaska Posts: 51	I ordered 3 wiring harnesses from GMC Paul. One was for the 350 w/ HEI, other one was for the headlights for my 69 GMC and the third was for the A/C harness. All three fit like a glove. Paul did an excellent job of wlking me thru the order to make sure I got what I needed. My vote to GMCPaul.



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