Location for tuned port wiring harness hole in firewall??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mocwon · 12-21-2004, 04:47 PM

Just about to the point of installing the Painless wiring harness for the tuned port injection. So, I'm curious where those you with tuned port setups made the hole in the firewall for the harness leading to the ECM?

Deuce · 12-21-2004, 07:31 PM

How did you find the overall quality/ease of install of the painless TPI harness??
I'm doing the same conversion and I was thinking about the painless harness as well if I don't use the stocker.

71swb4x4 · 12-21-2004, 08:33 PM

I put my hole right behind the pass side valve cover. From the interior it comes in behind the heater box. It took a really large grommet. I still need to seal my hole as well, but I have to pull my harness again before I seal it.

bagged91 · 12-21-2004, 11:24 PM

I would be interested to know how the painless harness works out too. I have a fully polished TPI and the complete stock harness, sensors, ECM & MAF waiting to go into something but I look at the stock harness & scratch my head. I bought the book from JTR (Jags That Run) but it still makes no sense to me....

Deuce · 12-22-2004, 01:14 AM

Quote:

Originally Posted by bagged91

I bought the book from JTR (Jags That Run) but it still makes no sense to me....

I bought that book too. Kinda useless as far as doing a TPI conversion. I was told to buy the Helms manual to help figure out the wiring.

Russell · 12-22-2004, 01:51 AM

www.chevythunder.com has absolutely everything you need to know for making your own harness

I can help with any MAF wiring harness questions

NPilot1975 · 12-22-2004, 08:30 AM

I am running an LT-1. I got the painless harness with extra length and mounted the computer under the passenger seat. I ran all the harness wiring down the inside of the framerail. The painless harnesses are great, I have the LT-1 harness and the chassis harness.

mocwon · 12-22-2004, 10:31 AM

Quote:

Originally Posted by Russell

www.chevythunder.com has absolutely everything you need to know for making your own harness

I can help with any MAF wiring harness questions

You just opened a can of worms... I bought the Painless harness and have never put one of these in so I'm sure I'll be taking you up on your offer of help. I did buy a couple of books on the topic so I know more than I did at one time but I'm sure I'll still need help. Thanks

Russell · 12-22-2004, 04:23 PM

Are you saying you already bought the painless setup, but are not installing it in favour of making your own? Cause I would highly suggest the painless harness if you already have one. If you don't have one, it is much cheaper to make your own, but you need a basic understanding of how the system works and how everything interacts. It all makes sense after you get to know how it all works together

mocwon · 12-22-2004, 05:14 PM

Quote:

Originally Posted by Russell

Are you saying you already bought the painless setup, but are not installing it in favour of making your own? Cause I would highly suggest the painless harness if you already have one. If you don't have one, it is much cheaper to make your own, but you need a basic understanding of how the system works and how everything interacts. It all makes sense after you get to know how it all works together

I bought a Painless wiring harness and will be using it. I just figured I'll probably run into some opportunities along the way and may need help.
Thanks, Greg

Deuce · 12-22-2004, 06:18 PM

Quote:

Originally Posted by mocwon

I bought a Painless wiring harness and will be using it. I just figured I'll probably run into some opportunities along the way and may need help.
Thanks, Greg

Can you post some detailed pics of the harness?? It might help the rest of us who are going to try and use the stock GM harness

I would name my 2nd born after you!!

WRMZ71 · 12-22-2004, 09:43 PM

That has got to be one of the worst cases of thread hijacking i have ever seen. Ladies and gents why don't we keep to what the original intent of the thread was.

Russell · 12-23-2004, 01:25 AM

Quote:

Originally Posted by WRMZ71

That has got to be one of the worst cases of thread hijacking i have ever seen. Ladies and gents why don't we keep to what the original intent of the thread was.

This is one situation when keeping your opinion to yourself probally would have been best... Kinda makes you look like a bit of an old grumpy man, lol!

The original question was anwsered, and now we are covering the rest of the bases

Deuce · 12-23-2004, 01:31 AM

Quote:

Originally Posted by WRMZ71

That has got to be one of the worst cases of thread hijacking i have ever seen. Ladies and gents why don't we keep to what the original intent of the thread was.

If that was the case you'd have nothing to complain about!!

So how about those pics

BobbyK · 12-24-2004, 01:04 AM

passenger side,just about in line with the valve cover.

red71cheyenne · 12-24-2004, 05:33 PM

I put mine in the same place. Right below the vacuum lines for the heater. Just remember to run your fuel pump relay wires thru the grommet before you put it all in.

Jeff.

12-21-2004, 04:47 PM	#1
mocwon Keep On Truckin' Join Date: Mar 2003 Location: Buda, Texas Posts: 1,354	Location for tuned port wiring harness hole in firewall??? Just about to the point of installing the Painless wiring harness for the tuned port injection. So, I'm curious where those you with tuned port setups made the hole in the firewall for the harness leading to the ECM? __________________ Just Passin' Thru Some projects are like herding cats; others are like putting out fires; this one was like herding cats on fire.....

12-21-2004, 07:31 PM	#2
Deuce Registered User Join Date: Apr 2004 Location: Calgary, Alberta,Canada Posts: 1,595	How did you find the overall quality/ease of install of the painless TPI harness?? I'm doing the same conversion and I was thinking about the painless harness as well if I don't use the stocker. __________________ I know what your thinking.......I have ESPN. Sometimes it's easier to do things the hard way. Fesler Built 1968 Chevy C10....Must resist the urge to mess with it!!

12-21-2004, 08:33 PM	#3
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	I put my hole right behind the pass side valve cover. From the interior it comes in behind the heater box. It took a really large grommet. I still need to seal my hole as well, but I have to pull my harness again before I seal it. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

12-21-2004, 11:24 PM	#4
bagged91 Out draggin' Join Date: Jan 2004 Location: Pitman,NJ Posts: 1,574	I would be interested to know how the painless harness works out too. I have a fully polished TPI and the complete stock harness, sensors, ECM & MAF waiting to go into something but I look at the stock harness & scratch my head. I bought the book from JTR (Jags That Run) but it still makes no sense to me.... __________________ 91 GMC Xcab LB-Bags/bd/caddy clip SOLD 72 C10 Cheyenne Super LWB SOLD 92 GMC K1500 Burb 72 C10 Burb (ex. Cheesewagon)SOLD 72 C20 Burb parts truck 71 C10 Burb "project"

12-22-2004, 01:51 AM	#6
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	www.chevythunder.com has absolutely everything you need to know for making your own harness I can help with any MAF wiring harness questions __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

12-22-2004, 08:30 AM	#7
NPilot1975 Senior Member Join Date: Aug 2002 Location: Plymouth, MA Posts: 891	I am running an LT-1. I got the painless harness with extra length and mounted the computer under the passenger seat. I ran all the harness wiring down the inside of the framerail. The painless harnesses are great, I have the LT-1 harness and the chassis harness. __________________ 1972 Blazer body...need to get a thread started for the rest of the story

12-22-2004, 04:23 PM	#9
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Are you saying you already bought the painless setup, but are not installing it in favour of making your own? Cause I would highly suggest the painless harness if you already have one. If you don't have one, it is much cheaper to make your own, but you need a basic understanding of how the system works and how everything interacts. It all makes sense after you get to know how it all works together __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

12-22-2004, 09:43 PM	#12
WRMZ71 Cause the Chicks DIG IT!! Join Date: Nov 2003 Location: Beaufort SC Posts: 509	That has got to be one of the worst cases of thread hijacking i have ever seen. Ladies and gents why don't we keep to what the original intent of the thread was.

12-24-2004, 01:04 AM	#15
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,772	passenger side,just about in line with the valve cover. __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

12-24-2004, 05:33 PM	#16
red71cheyenne Back in the sticks Join Date: Jan 2001 Location: Fordland, MO Posts: 3,188	I put mine in the same place. Right below the vacuum lines for the heater. Just remember to run your fuel pump relay wires thru the grommet before you put it all in. Jeff. __________________ 1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty

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