Glow plug relay LED indicator light
Posting Guru
Joined: Jan 2013
Posts: 2,215
Likes: 2
From: North Lake Tahoe
I'm a little confused on this, the aftermarket light indicates that the glow plugs are on and then when light turns off the glow plugs are off? Same difference as the WTS light right? I know on my truck it doesn't like to start after the WTS light turns off but if I wait longer and here the relay kick off then it starts no problem. What exactly is the purpose for the after market LED?
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From: Central Coast of CA
Stewart
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Tuned
Joined: Mar 2013
Posts: 343
Likes: 5
From: Plumsteadville PA
I'm a little confused on this, the aftermarket light indicates that the glow plugs are on and then when light turns off the glow plugs are off? Same difference as the WTS light right? I know on my truck it doesn't like to start after the WTS light turns off but if I wait longer and here the relay kick off then it starts no problem. What exactly is the purpose for the after market LED?
Posting Guru
Joined: Jan 2013
Posts: 2,215
Likes: 2
From: North Lake Tahoe
Ok, that makes sense. I always waited for the click in solenoid, you can hear it stay energized but the WTS light has already been turned off. I like this, good idea. So where in the relay did you tie into? I know it doesn't make a difference on the relay's but I have the E99 with only the one relay for the GP but not the relay for the intake heat.
Lead Driver
Joined: Jun 2007
Posts: 7,760
Likes: 27
From: Hampton, Maryland.
With an LED set up, you will learn a lot about your glow plugs. They will come on in 90+ degree heat if the truck has been sitting. Ithink this shows mine, I can't tell on my iPad until I post the picture.
Nope..I guess I don't have a good pic of mine, buts it's on the gauge pillar next to the middle gauge.
Nope..I guess I don't have a good pic of mine, buts it's on the gauge pillar next to the middle gauge.
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Tuned
Joined: Mar 2013
Posts: 343
Likes: 5
From: Plumsteadville PA
Ok, that makes sense. I always waited for the click in solenoid, you can hear it stay energized but the WTS light has already been turned off. I like this, good idea. So where in the relay did you tie into? I know it doesn't make a difference on the relay's but I have the E99 with only the one relay for the GP but not the relay for the intake heat.
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
It lets the operator know when the relay is closed. It does nothing for measuring how much actual current is being passed through the relay. For that you will need a volt meter on the glow plug side of the relay.
My '99 still has the original relay but it's pretty worn in places. Some days it passes nearly 12v through to the other side....other days it only passes around 9 volts.
Luckily in my climate it's not a super critical item so I haven't replaced it yet. I'll probably need to put a new one in there someday when I get some free time....
My '99 still has the original relay but it's pretty worn in places. Some days it passes nearly 12v through to the other side....other days it only passes around 9 volts.
Luckily in my climate it's not a super critical item so I haven't replaced it yet. I'll probably need to put a new one in there someday when I get some free time....
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Laughing Gas
Joined: Aug 2008
Posts: 823
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From: Dallas, Oregon
I put mine in the narrow trim panel below the instrument cluster. I have the GPR light on the right side of the steering column. I have my add-on heated mirror controls on the left side of the column. My hands-free cellphone control is on the right side near the GPR indicator.
I like to keep the warning and indicator lights in my lower peripheral vision, rather than in front of me. They distract me too much when in front of me. They catch my attention when they come on or go off in my peripheral vision, but are a minimal distraction otherwise.
Another reason for that location is that it isn't affected by removing the dash or lower trim panels.
I like to keep the warning and indicator lights in my lower peripheral vision, rather than in front of me. They distract me too much when in front of me. They catch my attention when they come on or go off in my peripheral vision, but are a minimal distraction otherwise.
Another reason for that location is that it isn't affected by removing the dash or lower trim panels.
Elder User
Joined: Dec 2012
Posts: 841
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From: Monroe, MI
did mine yesterday along with the relay from NAPA! it was pretty cool watching it today as i was driving around, every stop i made and then go to start the truck again, the shorter the LED was lit up. what sensors determine how long the GP's are on?
Lead Driver
Joined: Jun 2007
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From: Hampton, Maryland.
I believe it is dependent solely on oil temperature.