Notices
Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

Reverse switch wireing.

Thread Tools
 
Search this Thread
 
Old Nov 3, 2011 | 09:33 AM
  #1  
Rollin.IH.Coal's Avatar
Rollin.IH.Coal
Thread Starter
|
Senior User
Joined: Sep 2011
Posts: 205
Likes: 0
From: Camden
Reverse switch wireing.

i have the new reverse switch in.. what was c ut out ( by PO) was the harness that goes to it. i gound 4 loose cut wires in the harness directly where the harness for the reverse switch goes. it had 2 black wires, a red, and a purple. is this normal? bad wireing? i just dont know what goes to what.......
please help!
 
Reply
Old Nov 3, 2011 | 09:55 AM
  #2  
'94IDITurbo7.3's Avatar
'94IDITurbo7.3
Postmaster
Joined: Jul 2011
Posts: 3,061
Likes: 2
are you refering to the MLPS switch on the side of the e4od?
 
Reply
Old Nov 3, 2011 | 10:14 AM
  #3  
Rollin.IH.Coal's Avatar
Rollin.IH.Coal
Thread Starter
|
Senior User
Joined: Sep 2011
Posts: 205
Likes: 0
From: Camden
sorry, i have a T-19. it screws into the top. when you pop it into reverse it triggers the switch to turn on reverse lights. the power and ground wires com off that switch. my harness for the switch was cut out by PO. there is 4 wires haning out of my MAIN harness and i believe thats where the reverse switch wires in.
 
Reply
Old Nov 3, 2011 | 10:17 AM
  #4  
farmert's Avatar
farmert
Lead Driver
20 Year Member
Liked
Loved
Community Favorite
Joined: Mar 2006
Posts: 5,109
Likes: 1,538
From: western SD
On a manual tranny, the purple wire goes to the reverse switch. Does one of the other wires have a purple stripe? If so it would be the other wire for the reverse switch if I remember right. If your truck is a 4X4, the other two wires could be for the 4x4 indicator light in the dash.
 
Reply
Old Nov 3, 2011 | 10:20 AM
  #5  
Rollin.IH.Coal's Avatar
Rollin.IH.Coal
Thread Starter
|
Senior User
Joined: Sep 2011
Posts: 205
Likes: 0
From: Camden
see i did have to rewire the 4x4 and thats all done. i have two grounds which could just be cut maybe should be wired together? i know one is purple and one i believe is red
 
Reply
Old Nov 3, 2011 | 10:23 AM
  #6  
86f250XLT-4x4's Avatar
86f250XLT-4x4
Elder User
Joined: May 2011
Posts: 973
Likes: 2
From: Bellefontaine, OH
Club FTE Silver Member

Hey coal I will look at my truck when I hit home I can tell you exactly what goes where I have to pull what's left of the wiring harness from engine compartment back
 
Reply
Old Nov 3, 2011 | 11:08 AM
  #7  
Rollin.IH.Coal's Avatar
Rollin.IH.Coal
Thread Starter
|
Senior User
Joined: Sep 2011
Posts: 205
Likes: 0
From: Camden
THANKS ALOT!
 
Reply
Old Nov 3, 2011 | 11:45 AM
  #8  
swooshcmk's Avatar
swooshcmk
Elder User
Joined: Apr 2002
Posts: 950
Likes: 2
From: West Bend
Purple wire (with orange stripe) feeds power to the reverse switch. Black wire with pink stripe feeds power from the switch to the backup lamps.

4x4 indicator light would be a light blue wire running from the indicator lamp in the cab down to the switch on the transfer case.

If the red wire has a light blue tracer, it's part of the vehicle starting system - possibly a wire that's unused with the manual transmission as it would go to the neutral safety switch on an automatic transmission.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-1

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-2

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-3

Every 2026 Ford Engine Explained

 Brett Foote
story-4

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-5

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-6

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-7

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-8

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
story-9

Top 10 Ford Truck Tragedies

 Joe Kucinski
Old Nov 3, 2011 | 11:46 AM
  #9  
Rollin.IH.Coal's Avatar
Rollin.IH.Coal
Thread Starter
|
Senior User
Joined: Sep 2011
Posts: 205
Likes: 0
From: Camden
i have two more then its not 4x4 i already have that taken care of as previously stated, ill try and get pics tonight
 
Reply
Old Nov 3, 2011 | 12:06 PM
  #10  
86f250XLT-4x4's Avatar
86f250XLT-4x4
Elder User
Joined: May 2011
Posts: 973
Likes: 2
From: Bellefontaine, OH
Club FTE Silver Member

By the way I have a complete wiring harness for a 86 standard cab I only cut speaker wires and a plug off but I still have the plug and right now it's from dash to headlights including the fuse box not selling but might barter just pm me (stock stereo wires are cut and plugs gone
 
Reply
Old Nov 3, 2011 | 12:46 PM
  #11  
joshofalltrades's Avatar
joshofalltrades
Postmaster
Joined: Feb 2011
Posts: 3,560
Likes: 1
on gas trucks, i know that 2 of the wires were connected to each other and the other 2 went to the switch. it would appear that the 2 that are connected would be for a NSS on an automatic transmission.
beware that if you accidentally cross the wrong wires there, the starter will engage when the key is turned on (experience), so be sure to test its operation before its all buttoned up.
 
Reply
Old Nov 3, 2011 | 12:48 PM
  #12  
Rollin.IH.Coal's Avatar
Rollin.IH.Coal
Thread Starter
|
Senior User
Joined: Sep 2011
Posts: 205
Likes: 0
From: Camden
EAHHHHHHHH that happened to me. i almost put it in reverse to watch for the light to flick on. **** my pants!
 
Reply
Old Nov 3, 2011 | 04:45 PM
  #13  
joshofalltrades's Avatar
joshofalltrades
Postmaster
Joined: Feb 2011
Posts: 3,560
Likes: 1
When I did it, the truck had a battery disconnect switch which was off, key on, I hit the switch to check for lights and ran over some parts I needed
 
Reply
Old Nov 3, 2011 | 10:37 PM
  #14  
86f250XLT-4x4's Avatar
86f250XLT-4x4
Elder User
Joined: May 2011
Posts: 973
Likes: 2
From: Bellefontaine, OH
Club FTE Silver Member

Hey sorry coal I couldn't get the rear harness off yet I will have it tomorrow if weather here allows it
 
Reply
Old Nov 4, 2011 | 07:09 AM
  #15  
Rollin.IH.Coal's Avatar
Rollin.IH.Coal
Thread Starter
|
Senior User
Joined: Sep 2011
Posts: 205
Likes: 0
From: Camden
Thanks man, im trying to make her my daily driver, its getting cold here in upstate NY aand i commute to college 30miles a day. however im willing to give up the 34mpg jetta to drive a badass monster getting 18mpg.

=)
 
Reply



All times are GMT -5. The time now is 03:33 AM.

story-0
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-1
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-2
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-3
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-4
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-5
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-6
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-7
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-8
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-9
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE