PSI wiring Harnesses - The 1947 - Present Chevrolet & GMC Truck Message Board Network

psiconversion · 08-28-2014, 03:15 PM

Hey Guys/Gals

I just wanted to stop in and introduce myself and company

PSI is a new forum vendor and we specialize in the design and manufacture of Standalone Wiring Harnesses for GM Gen II, III, and IV LS based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3 and LS7 Engines. In addition to wiring harnesses, you will find other components and kits for retrofitting older vehicles with these powertrains including PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion needs

As a benefit for forum members we are currently running a limited time discount of 10% off for online orders only through our website at
http://psiconversion.com/

Use coupon code INTRO10 at checkout to receive the discount

The discount will only last until 09/30/2014

Feel free to PM me with any questions

Wire it up and Fire it up

Adam
PSI

Kim57 · 08-28-2014, 05:14 PM

You guys are where I got my harness from.
To bad you weren't a site vender back then.
easy guys to work with and had good pricing when I bought mine.
Kim

LS1Impala · 08-28-2014, 06:57 PM

Great guys to work with, my harness is from PSI and it was very nice!

Xeen · 08-28-2014, 07:31 PM

My truck has a PSI harness, nice quality, easy installation.

solidaxel · 08-29-2014, 08:59 AM

Adam are you still working on your site?

psiconversion · 08-29-2014, 09:24 AM

Quote:

Originally Posted by solidaxel

Adam are you still working on your site?

On our website?

Website is up and running and has been. Is the link in my original post not working?

Houston Ben · 08-29-2014, 10:05 AM

Does your TCC/Brake switch kit work on new 6L80 out of a 2011 Silverado?

psiconversion · 08-29-2014, 10:10 AM

Quote:

Originally Posted by Houston Ben

Does your TCC/Brake switch kit work on new 6L80 out of a 2011 Silverado?

Yes it does

**Hart_Rod** · 08-29-2014, 11:11 AM

Quote:

Originally Posted by Houston Ben

Does your TCC/Brake switch kit work on new 6L80 out of a 2011 Silverado?

Quote:

Originally Posted by psiconversion

Yes it does

6L80's TCC are wired opposite of the the early Gen III stuff.....

psiconversion · 08-29-2014, 11:13 AM

Quote:

Originally Posted by Hart_Rod

6L80's TCC are wired opposite of the the early Gen III stuff.....

Yes we make tcc kits in-house for 4L60E/4L80E/6L80E

**Hart_Rod** · 08-29-2014, 11:25 AM

Quote:

Originally Posted by psiconversion

Yes we make tcc kits in-house for 4L60E/4L80E/6L80E

The last time I checked, your directions posted online,

http://psiconversion.com/tech_articl...structions.pdf

http://psiconversion.com/tech_articl...STRUCTIONS.pdf

they show the 6L80/6L90being wired up like the 4L60/80s, but they should be wired up opposite. The TCC wire receives 12V when the brakes are pushed (brake lights activated).

Like this:

psiconversion · 08-29-2014, 11:33 AM

Quote:

Originally Posted by Hart_Rod

The last time I checked, your directions posted online,

http://psiconversion.com/tech_articl...structions.pdf

http://psiconversion.com/tech_articl...STRUCTIONS.pdf

they show the 6L80/6L90being wired up like the 4L60/80s, but they should be wired up opposite. The TCC wire receives 12V when the brakes are pushed (brake lights activated).

Like this:

Yes the instructions online are for a 4L60E/80E and have since been updated in the instruction manual we send to our customers. We do make a tcc/brake switch for a 6L80E wired correctly. Thank you for concern though Hart_Rod and bringing the old instructions on our website to my attention

**Hart_Rod** · 08-29-2014, 11:42 AM

Quote:

Originally Posted by psiconversion

Yes the instructions online are for a 4L60E/80E and have since been updated in the instruction manual we send to our customers. We do make a tcc/brake switch for a 6L80E wired correctly. Thank you for concern though Hart_Rod and bringing the old instructions on our website to my attention

No worries. Just wanted to make sure the correct information was out there and glad you have updated your instructions.

JNJchev77 · 08-29-2014, 01:43 PM

My Dad and I both ordered from PSI. My harness didn't have any issues and hasn't now for about 2 years.

My Dad had an issue with his, but Jon at PSI worked with him to try and get it figured out, for several days. Problem wasn't solved but PSI replaced the computer and everything has been working great.

Outstanding customer service and in my opinion the harness is well worth the $$$!

JOHNORO · 09-01-2014, 11:01 PM

Adam,
Whats the timeline and cost to get a harness for a ML7 out of a 2001 silverdao
made with the braided wire sleeve instead of with the plastic split loom ..?

Roz · 09-02-2014, 09:11 AM

I'm glad to see such positive responses on the PSI harness! I ordered my harness a couple weeks ago from Texas Speed. I wish I would have waited!

NEWFISHER · 09-03-2014, 06:59 PM

Adam, PM'ed you

psiconversion · 09-12-2014, 09:06 AM

Quote:

Originally Posted by JOHNORO

Adam,
Whats the timeline and cost to get a harness for a ML7 out of a 2001 silverdao
made with the braided wire sleeve instead of with the plastic split loom ..?

Sorry I've been out of the office. We currently don't offer split braided loom but turnaround for most harnesses is 2 days

08-28-2014, 03:15 PM	#1
psiconversion Registered User Join Date: Aug 2014 Location: Lakewood, NJ Posts: 12	PSI wiring Harnesses Hey Guys/Gals I just wanted to stop in and introduce myself and company PSI is a new forum vendor and we specialize in the design and manufacture of Standalone Wiring Harnesses for GM Gen II, III, and IV LS based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3 and LS7 Engines. In addition to wiring harnesses, you will find other components and kits for retrofitting older vehicles with these powertrains including PCM programming, Fuel Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector pigtails and a complete line of hardware to complete your conversion needs As a benefit for forum members we are currently running a limited time discount of 10% off for online orders only through our website at http://psiconversion.com/ Use coupon code INTRO10 at checkout to receive the discount The discount will only last until 09/30/2014 Feel free to PM me with any questions Wire it up and Fire it up Adam PSI

08-28-2014, 05:14 PM	#2
Kim57 Registered User Join Date: Aug 2007 Location: Corona, California Posts: 7,998	Re: PSI wiring Harnesses You guys are where I got my harness from. To bad you weren't a site vender back then. easy guys to work with and had good pricing when I bought mine. Kim __________________ My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=283107

08-28-2014, 06:57 PM	#3
LS1Impala Registered User Join Date: Jul 2014 Location: New Braunfels, TX Posts: 28	Re: PSI wiring Harnesses Great guys to work with, my harness is from PSI and it was very nice! __________________ 1968 C10 5.3/4L60E LS6 cam and a 3600 stall 1968 Camaro 6.0/4L65E T76 turbo 9" 1960 Impala LS1/4L60E all stock cruiser

08-28-2014, 07:31 PM	#4
Xeen Registered User Join Date: Aug 2012 Location: Topeka Kansas Posts: 2,655	Re: PSI wiring Harnesses My truck has a PSI harness, nice quality, easy installation. __________________ Please call me Brian. Check out My 1972 SWB Fleetside 5.3L Vortec Restomod Build

08-29-2014, 08:59 AM	#5
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: PSI wiring Harnesses Adam are you still working on your site? __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

08-29-2014, 10:05 AM	#7
Houston Ben Registered User Join Date: May 2013 Location: Houston Texas Posts: 713	Re: PSI wiring Harnesses Does your TCC/Brake switch kit work on new 6L80 out of a 2011 Silverado?

08-29-2014, 01:43 PM	#14
JNJchev77 Registered Cruiser Join Date: Mar 2010 Location: Mesa, AZ Posts: 918	Re: PSI wiring Harnesses My Dad and I both ordered from PSI. My harness didn't have any issues and hasn't now for about 2 years. My Dad had an issue with his, but Jon at PSI worked with him to try and get it figured out, for several days. Problem wasn't solved but PSI replaced the computer and everything has been working great. Outstanding customer service and in my opinion the harness is well worth the $$$! __________________ 77' Chevy SB Dropmembered Front and Rear 5.3/4l60e combo

09-01-2014, 11:01 PM	#15
JOHNORO oldschoolblazer@yahoo.com Join Date: Jun 2007 Location: Long Beach CA. Posts: 1,968	Re: PSI wiring Harnesses Adam, Whats the timeline and cost to get a harness for a ML7 out of a 2001 silverdao made with the braided wire sleeve instead of with the plastic split loom ..?

09-02-2014, 09:11 AM	#16
Roz Registered User Join Date: Apr 2014 Location: Cleveland TN Posts: 31	Re: PSI wiring Harnesses I'm glad to see such positive responses on the PSI harness! I ordered my harness a couple weeks ago from Texas Speed. I wish I would have waited!

09-03-2014, 06:59 PM	#17
NEWFISHER Registered User Join Date: Sep 2012 Location: Oregon Posts: 3,303	Re: PSI wiring Harnesses Adam, PM'ed you __________________ GOD BLESS AMERICA!

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