Wait to Start Glow Wire
Thread Starter
|
Mountain Pass
Joined: Jul 2004
Posts: 157
Likes: 1
Wait to Start Glow Wire
Ok guys I need some help. My alarm web sight can't give me a straight answer so heres the question.
This is for our F350 7.3, with Ford factory remote lock/unlock.
Installing a Compustar 2WSS-AS remote start alarm. One of the alarm connectiors is for the glow to start signal needed for the remote start.
The alarm guys can't seem to give me a straight answer. Here's what they described.
1. Glow wire is located on the 42 pin plug that is located directly under the air intake. This is the plug that is connected to the left hand valve cover directly under the intake pipe that connects to the turbo. They claim its a white wire. Well I found two white wires. Anyone no if this is the case and if so which one.
2. Another one claimed it was a wht/grn wire out of the same cluster, which connects to pin 8 on the PCM, left side firewall engine side.
3. Several claimed its a blck/pink behind the instrument cluster. (does this mean taking out the cluster to get too this.
Anyone here wired there own remote start in this truck, or have knowledge of it. Thanks
This is for our F350 7.3, with Ford factory remote lock/unlock.
Installing a Compustar 2WSS-AS remote start alarm. One of the alarm connectiors is for the glow to start signal needed for the remote start.
The alarm guys can't seem to give me a straight answer. Here's what they described.
1. Glow wire is located on the 42 pin plug that is located directly under the air intake. This is the plug that is connected to the left hand valve cover directly under the intake pipe that connects to the turbo. They claim its a white wire. Well I found two white wires. Anyone no if this is the case and if so which one.
2. Another one claimed it was a wht/grn wire out of the same cluster, which connects to pin 8 on the PCM, left side firewall engine side.
3. Several claimed its a blck/pink behind the instrument cluster. (does this mean taking out the cluster to get too this.
Anyone here wired there own remote start in this truck, or have knowledge of it. Thanks
Fleet Mechanic
Joined: Feb 2005
Posts: 1,797
Likes: 1
From: Northern Colorado
Since I have not installed a remote start I am confused as to which circuit you are looking for. Are you trying to find:
a. the Wait-to-start dash indicator wire
b. the glow plug hot +12v circuit wire (the one that makes the glow plug hot)
c. the wire that tells the PCM that the glow plugs are energized (basically the same as the +12v glow plug hot feed)
d. the wire form the PCM that controls the GPR and causes the GPR to actuate
a. the Wait-to-start dash indicator wire
b. the glow plug hot +12v circuit wire (the one that makes the glow plug hot)
c. the wire that tells the PCM that the glow plugs are energized (basically the same as the +12v glow plug hot feed)
d. the wire form the PCM that controls the GPR and causes the GPR to actuate
Thread Starter
|
Mountain Pass
Joined: Jul 2004
Posts: 157
Likes: 1
Originally Posted by guzzle92
Since I have not installed a remote start I am confused as to which circuit you are looking for. Are you trying to find:
a. the Wait-to-start dash indicator wire
b. the glow plug hot +12v circuit wire (the one that makes the glow plug hot)
c. the wire that tells the PCM that the glow plugs are energized (basically the same as the +12v glow plug hot feed)
d. the wire form the PCM that controls the GPR and causes the GPR to actuate
a. the Wait-to-start dash indicator wire
b. the glow plug hot +12v circuit wire (the one that makes the glow plug hot)
c. the wire that tells the PCM that the glow plugs are energized (basically the same as the +12v glow plug hot feed)
d. the wire form the PCM that controls the GPR and causes the GPR to actuate
Their are apparently a couple locations this can be found.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
AFAIK there is no wire that tells the ECU that the glow plugs are hot. They are simply assumed hot after a set amount of time.
The way that my truck activates the glow plugs is when you turn the key on, one of the two small wires gets power all the time. The way the relay is commanded on is completion of the ground circuit through the ECU.
The way that my truck activates the glow plugs is when you turn the key on, one of the two small wires gets power all the time. The way the relay is commanded on is completion of the ground circuit through the ECU.
Fleet Mechanic
Joined: Feb 2005
Posts: 1,797
Likes: 1
From: Northern Colorado
There is a 18 guage White/Light green wire that comes off of the GPR via a blue - 20 guage fusable link and connects to the PCM pin #8 (ECU) whenever the glow plugs are energized. This wire would feed +12v to the PCM only if the GPR was working and feeding +12v to the Glow Plugs. It would go to 0 volts when the GPR opened.
I have always assumed that this wire is feeding some info to the PCM but the WTS light does not correlate to the time that the glow plugs are on. The glow plugs can be on for as much as 2 minutes but the WTS light will not stay on for that long.
I have always assumed that this wire is feeding some info to the PCM but the WTS light does not correlate to the time that the glow plugs are on. The glow plugs can be on for as much as 2 minutes but the WTS light will not stay on for that long.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
I think you may need to trace the "wait to start" wire from behind the cluster and tap into that somewhere convenient. That light is connected to the "timer" somehow and should give your remote start the signal (or absence of hot if you will) it needs to crank the engine after the delay. Sorry I don't have a wiring diagram for these trucks but somebody does.
Thread Starter
|
Mountain Pass
Joined: Jul 2004
Posts: 157
Likes: 1
Originally Posted by Tenn01PSD350
I think you may need to trace the "wait to start" wire from behind the cluster and tap into that somewhere convenient. That light is connected to the "timer" somehow and should give your remote start the signal (or absence of hot if you will) it needs to crank the engine after the delay. Sorry I don't have a wiring diagram for these trucks but somebody does.
Trending Topics
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by watersurgeon
Great idea except the instrument cluster is fed through a bus ribbon cable, and there is no way to trace just the light. Thanks for the info, that was my first idea.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic 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
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Fleet Mechanic
Joined: Feb 2005
Posts: 1,797
Likes: 1
From: Northern Colorado
Originally Posted by watersurgeon
Great idea except the instrument cluster is fed through a bus ribbon cable, and there is no way to trace just the light. Thanks for the info, that was my first idea.
It would be helpful to find out how your remote start's logic determines when to start the truck. If it has its own timer, then the PCM pin 8 would do the trick. If not, it may need to have the 12 volt drop from the WTS indicator.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Yeah, I think it would make sense that any after market remote starter (for the PSD) would have it's own 30-45 second delay and then just go into cranking after it energized the GPs. I know there are several folks on this forum who have installed or had one installed. Hopefully they will happen along soon.
Postmaster
Joined: Jun 2005
Posts: 3,438
Likes: 0
From: New Hampshire
If i understand your original post correctly i would go with Guzzle's idea
and connect to the terminal at the GPR that is running to the GP's. I believe what your looking for is a 12vdc signal that tells your remote starter computer the GP's have been activated and i'm going to WAIT until the signal goes away(once the PCM shuts off the GP's) to start the vehicle. This is typically 90 seconds but can run up to two minutes max in the GP on/off cycle.
Is this wire looking for +12vdc(+ or - 2volts) to activate a commmand for the remote starter to wait for the glow plug cycle to complete?
Nut
and connect to the terminal at the GPR that is running to the GP's. I believe what your looking for is a 12vdc signal that tells your remote starter computer the GP's have been activated and i'm going to WAIT until the signal goes away(once the PCM shuts off the GP's) to start the vehicle. This is typically 90 seconds but can run up to two minutes max in the GP on/off cycle.
Is this wire looking for +12vdc(+ or - 2volts) to activate a commmand for the remote starter to wait for the glow plug cycle to complete?
Nut
Thread Starter
|
Mountain Pass
Joined: Jul 2004
Posts: 157
Likes: 1
Originally Posted by guzzle92
There is a 18 guage White/Light green wire that comes off of the GPR via a blue - 20 guage fusable link and connects to the PCM pin #8 (ECU) whenever the glow plugs are energized. This wire would feed +12v to the PCM only if the GPR was working and feeding +12v to the Glow Plugs. It would go to 0 volts when the GPR opened.
I have always assumed that this wire is feeding some info to the PCM but the WTS light does not correlate to the time that the glow plugs are on. The glow plugs can be on for as much as 2 minutes but the WTS light will not stay on for that long.
I have always assumed that this wire is feeding some info to the PCM but the WTS light does not correlate to the time that the glow plugs are on. The glow plugs can be on for as much as 2 minutes but the WTS light will not stay on for that long.
Postmaster
Joined: Jun 2005
Posts: 3,438
Likes: 0
From: New Hampshire
Originally Posted by watersurgeon
GUZZLE92, Thanks for this tip. Yes thats the wire. Runs 12v+ and then shuts off and the wts lite stays on about 10-15 seconds. I timed the wire multiple times and it was consistent at 1.02 minutes. (Southern California at about 200' sea level) If I am not mistaken I believe that the wait time correlates to temp, and altitude.
Nut