Notices
1994.5 - 1997 7.3L Power Stroke Diesel  

Question

Thread Tools
 
Search this Thread
 
Old Mar 27, 2017 | 05:24 PM
  #1  
green_95's Avatar
green_95
Thread Starter
|
Tuned
Joined: Aug 2015
Posts: 396
Likes: 2
Question

In switching my truck to a manual from a auto, if I used a manual pcm and the manual transmission wiring harness, will I still have wiring issues? Here's th truck I got, I'll be parting it out after my swap is done. And are you guys sure the 7.3 idi and the 7.3 powerstroke transmission will interchange? Lol
 
Reply
Old Mar 27, 2017 | 05:31 PM
  #2  
madpogue's Avatar
madpogue
Lead Driver
20 Year Member
Liked
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
The transmission will interchange. AFAIK, the wiring will be completely incompatible. You'll obviously need a manual PCM from a donor truck. Only wiring changes you should have to make would be to connect up the clutch switch, jumper the start terminals on the decommissioned NSS connector, and run a connector from the reverse light terminals on the NSS connector to the reverse light switch on the donor tranny. That connector is available on RockAuto, IIRC $10 and change.

You'll also need a rear driveshaft, if the red-white-red two-tone in the photo is the recipient.
 
Reply
Old Mar 27, 2017 | 06:11 PM
  #3  
green_95's Avatar
green_95
Thread Starter
|
Tuned
Joined: Aug 2015
Posts: 396
Likes: 2
Originally Posted by madpogue
The transmission will interchange. AFAIK, the wiring will be completely incompatible. You'll obviously need a manual PCM from a donor truck. Only wiring changes you should have to make would be to connect up the clutch switch, jumper the start terminals on thedecommissioned NSS connector , and run a connector from the reverse light terminals on the NSS connector to the reverse light switch on the donor tranny. That connector is available on RockAuto, IIRC $10 and change.

You'll also need a rear driveshaft, if the red-white-red two-tone in the photo is the recipient.
I'm going to have my pcm re flashed to a manual. When you say the wiring will be completely in compatible, do you mean the manual trans wiring harness won't work on my truck? And what is a decommissioned NSS connector? I don't really care about my reverse lights.
 
Reply
Old Mar 27, 2017 | 08:49 PM
  #4  
Kingkong0192's Avatar
Kingkong0192
More Turbo
10 Year Member
Joined: May 2012
Posts: 542
Likes: 1
From: New Milford, CT
Originally Posted by green_95
I'm going to have my pcm re flashed to a manual. When you say the wiring will be completely in compatible, do you mean the manual trans wiring harness won't work on my truck? And what is a decommissioned NSS connector? I don't really care about my reverse lights.
Decommissioned - no longer used. Kind of like that trailer of yours should be.

He means that the NSS will no longer be used when you swap in a ZF trans. However, with an unflashed auto PCM the truck will be throwing a bunch of codes for the transmission as it thinks there's an auto in there when in reality it's a stick.

The truck won't start unless you jumper the two start terminals in the plug to trick the auto PCM into thinking the truck is in park/neutral.

Even if you "don't really care" about your reverse lights it's literally one more wire you need to hookup and will take maybe another 5 minutes. Just hook it up.

The wiring is totally different from IDI to PS.
 
Reply
Old Mar 28, 2017 | 02:35 AM
  #5  
green_95's Avatar
green_95
Thread Starter
|
Tuned
Joined: Aug 2015
Posts: 396
Likes: 2
So am I better off keeping my auto pcm and using my auto harness?
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
green_95
1994.5 - 1997 7.3L Power Stroke Diesel
3
Apr 3, 2017 08:40 AM
AMERICA_
Explorer, Sport Trac, Mountaineer & Aviator
3
Mar 17, 2015 10:27 PM
91 Dually
1994.5 - 1997 7.3L Power Stroke Diesel
1
May 4, 2013 08:32 PM
Greg5OH
1987 - 1996 F150 & Larger F-Series Trucks
14
Jan 29, 2013 07:36 AM
bostonpowerstroke
1994.5 - 1997 7.3L Power Stroke Diesel
7
Aug 22, 2010 04:28 PM




All times are GMT -5. The time now is 07:53 PM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE