Glowplug LED indicator - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 06-07-2011, 02:08 PM Thread Starter
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Glowplug LED indicator

I'm wanting to install an LED on my dash that stays lit the entire time my glow plugs are on. What wire(s) would I need to tap into, and what voltage are they?

06 F250 FX4 Lariat, 35" Nitto Terra Grapplers, 6" Lift Leveled w/Bilsteins, 4" MBRP TB Exhaust w/Cat Delete, Edge Insight w/EGT Probe & Dash Pod, SCT X3 w/SRL Tune From Matt @ Gearhead, Powerslot Rotors, Hawk Pads, Upgraded Oil Cooler Screen, Upgraded Turbo Drain Tube, Upgraded STC Fitting, Upgraded FPR Spring, CAT ELC Coolant, ARP Head Studs, Opti-Lube XPD, Coolant Filter, 45K Miles
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post #2 of 11 Old 06-07-2011, 02:20 PM
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If you buy a volt gauge, you can tell when the GP turn off when the volts jump up to the idle output of you alternator.

I used a cheap $15 cigarette lighter style digital volt gauge. This way you can see when the GP turn off, check your batteries volts when off, and your alternator volt output.

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post #3 of 11 Old 06-07-2011, 03:21 PM Thread Starter
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I have a voltmeter, just not sure where to tap into. My plan is to wait until the LED goes out before starting the engine.

06 F250 FX4 Lariat, 35" Nitto Terra Grapplers, 6" Lift Leveled w/Bilsteins, 4" MBRP TB Exhaust w/Cat Delete, Edge Insight w/EGT Probe & Dash Pod, SCT X3 w/SRL Tune From Matt @ Gearhead, Powerslot Rotors, Hawk Pads, Upgraded Oil Cooler Screen, Upgraded Turbo Drain Tube, Upgraded STC Fitting, Upgraded FPR Spring, CAT ELC Coolant, ARP Head Studs, Opti-Lube XPD, Coolant Filter, 45K Miles
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post #4 of 11 Old 06-07-2011, 03:30 PM
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Waiting for the GPM timer to turn off may take up to 2min. Why would you want to do that?

2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
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post #5 of 11 Old 06-07-2011, 04:10 PM Thread Starter
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Ive noticed that if I wait for about a minute after key on, the truck starts almost immediately. If I wait for say 15-20 seconds, the engine will turn over 2 or three times before it starts. I added Rev-X on my previous oil change, and the truck started quicker, but since Ive changed the oil this time, its back to turning over 2 or 3 times before it catches.

I did find that its a 12v circuit, so Im gonna give it a try. I got a blue 12v LED, holder, wire, and blue split loom all for about $20. Cheap easy mod, that will save on starter and engine wear and tear. May not make that big of a difference, but in the long run its good piece of mind.

06 F250 FX4 Lariat, 35" Nitto Terra Grapplers, 6" Lift Leveled w/Bilsteins, 4" MBRP TB Exhaust w/Cat Delete, Edge Insight w/EGT Probe & Dash Pod, SCT X3 w/SRL Tune From Matt @ Gearhead, Powerslot Rotors, Hawk Pads, Upgraded Oil Cooler Screen, Upgraded Turbo Drain Tube, Upgraded STC Fitting, Upgraded FPR Spring, CAT ELC Coolant, ARP Head Studs, Opti-Lube XPD, Coolant Filter, 45K Miles
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post #6 of 11 Old 06-07-2011, 04:18 PM
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Find the glow plug relay. Their is two large terminals. One will have constant battery voltage, the other is the output to your glowplugs (aka only on when the glow plugs are on)

Thought about doing this myself, just not high on the list of priorities

Allen
1999.5 F-350 7.3, six-speed

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post #7 of 11 Old 06-07-2011, 05:27 PM
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glow plug relay is not the same as a 7.3, its a sealed box in front of the passanger valve cover, i dont know how to tap into it,


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post #8 of 11 Old 06-07-2011, 05:31 PM
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Oh.......nevermind then

You should be able to strip back the coating and sodder in a light gauge wire and get a signal that way.

Allen
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post #9 of 11 Old 06-07-2011, 06:40 PM Thread Starter
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Just finished, and it works great! Truck starts much quicker when I wait til the LED goes off (approx 60 seconds). Easy mod:





06 F250 FX4 Lariat, 35" Nitto Terra Grapplers, 6" Lift Leveled w/Bilsteins, 4" MBRP TB Exhaust w/Cat Delete, Edge Insight w/EGT Probe & Dash Pod, SCT X3 w/SRL Tune From Matt @ Gearhead, Powerslot Rotors, Hawk Pads, Upgraded Oil Cooler Screen, Upgraded Turbo Drain Tube, Upgraded STC Fitting, Upgraded FPR Spring, CAT ELC Coolant, ARP Head Studs, Opti-Lube XPD, Coolant Filter, 45K Miles
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post #10 of 11 Old 06-07-2011, 06:43 PM
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Where did you tap into?

Allen
1999.5 F-350 7.3, six-speed

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