quick question on GPs
Senior User
Joined: Dec 2011
Posts: 200
Likes: 0
From: Salem, IN
You assumed wrong. I guess you completely forgot to look at the post above where I said it was the Brown w/ Red Stripe wire that activates the glow plug relay 
The Brown w/ Red Stripe will have 12v on it until the PCM grounds it out, then it will have 0v and it will ohm to ground.
The Brown w/ Red Stripe will have 12v on it until the PCM grounds it out, then it will have 0v and it will ohm to ground.
Trending Topics
Thread Starter
|
Senior User
Joined: Oct 2003
Posts: 351
Likes: 1
From: Sullivan, IL USA
I did read what you wrote, and my reply was if PCM wire goes to ground, then why would I read 12v from it when disconnected. If it goes to ground then it should be 0v.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Senior User
Joined: Dec 2011
Posts: 200
Likes: 0
From: Salem, IN
You will read 12v on the Brown w/ Red stripe wire when the PCM isn't grounding the wire.
Thread
Thread Starter
Forum
Replies
Last Post
Carl Brown
1999 - 2003 7.3L Power Stroke Diesel
25
Feb 21, 2013 06:51 PM