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Thread: Thoughts on Engine Compartment Light

  1. #1
    Join Date
    Jan 2005
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    Just South of Memphis, TN
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    Exclamation Thoughts on Engine Compartment Light

    I just installed an under hood light in my 2004 (From a 2003 Marauder)...It has a ball bearing that rolls down and makes the electrical contact when the hood is opened... replaced the old mercury switches...
    So I got to thinking (here's where the trouble begins)
    I figure that when we accelerate the ball bearing rolls back and momentarially TURNS ON the under hood light...Think about it...
    OK so how do we go about checking this out? Camera under the hood?
    Small child strapped to left inside fender well? (My personal favorite)
    "Inquiring Minds Need To Know"
    Architect
    Modifications to my 2004 Mercury Marauder:
    "Xcalibrator SCT" Flash...BEST MODIFICATION...
    "Ford Racing" 410 gear
    18"X8.5" Black Bullitt Wheels
    Black Lugs and Black Aluminum Valve stems
    "Ford Racing" Center caps
    Black Wilwood Brakes (fronts)
    A-Pillar Mounted "ScanGauge II"
    "Powered By Ford" coil covers
    30% Window Tint
    "X-pel" Light Shields
    "Magnaflow" Stainless Mufflers
    "Pro-gard" skid plate
    "WeatherTech" window deflectors
    "Stealth Tech" Parking/turn lamps
    Rear Spoiler
    "Sylvania" Silver Stars headlight lamps
    "Kenny Brown" dead pedal
    "Megs" delete resonator tips
    "SS" Titanium Inserts
    Blacked out window trim

  2. #2
    Join Date
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    Location
    Lehigh Valley, PA
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    5,956
    isnt the ball on an angle? With the hood shut i'd imagine that it'd have to go up and make a contact....



    Hey, if you had a bright enough light at night in there (not the dinky stock bulb, like a really bright LED) just go do some launches and see if you see any light flashing under the hood


    2016 Ford Mustang GT PP - Lund nGauge, BMR vertical links, MGW Shifter, BMR CB005

    2004 Mercury Marauder - Eaton M112, Billetflow 3.4, Accufab SBTB + Plenum, T-56 Magnum, 4.10s, Stainless Works LTs, 2.5" Exhaust, Borla Stingers, Ridetech Coilovers + Adj rear shocks, FX-R projectors, Wilwood 13" BNSL6 + FNSL4 BBKs, S55 Gauge Cluster
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  3. #3
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    Quote Originally Posted by Architect View Post
    I just installed an under hood light in my 2004 (From a 2003 Marauder)...It has a ball bearing that rolls down and makes the electrical contact when the hood is opened... replaced the old mercury switches...
    So I got to thinking (here's where the trouble begins)
    I figure that when we accelerate the ball bearing rolls back and momentarially TURNS ON the under hood light...Think about it...
    OK so how do we go about checking this out? Camera under the hood?
    Small child strapped to left inside fender well? (My personal favorite)
    "Inquiring Minds Need To Know"
    Architect
    Why would turning on the light for a moment be of a concern?

    Sounds like you have too much time on your hands.....
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  4. #4
    Join Date
    Sep 2002
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    6,273
    Run a wire from the switch to your interior, attach a light and test the theory....... if you dare!!!!
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  5. #5
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    It's like the refrigerator light....impossible to check it!....
    2020 Ford Ranger STX DFI Turbo 2.3L 10 speed Auto
    2017 Ford Fusion Sport DFI Twin Turbo 2.7L V6 6 speed Auto (14.000 ET bone stock in 82 degree heat)
    1985 Mustang GT 5.0 Hatchback 4bbl 5 speed manual (525 HP 363 Dart block/AFR heads with Magnum 6 speed in the works)
    1984 Mustang GT 2.3 Turbo Convertible FI. 5 speed manual
    1966 427 Cobra (ERA) 468 all Aluminum FE 2x4bbl 5 speed manual

    SOLD : 2003 Mercury Marauder FI. 4 speed Auto
    w/Crower Cams & Springs, +1mm SS valves, mild port job on the cylinder heads.
    Extrude honed intake w/PHP spacer.
    Kooks Headers w/2.5" High Flow Cats & X-Pipe, Magnaflow mufflers, OEM tailpipes w/Megs Tips
    B&M Trans cooler w/fan, Level 10 Shift Kit, Art Carr Hughes Deep Sump Trans Pan,
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  6. #6
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    Quote Originally Posted by Architect View Post
    I just installed an under hood light in my 2004 (From a 2003 Marauder)...It has a ball bearing that rolls down and makes the electrical contact when the hood is opened... replaced the old mercury switches...
    So I got to thinking (here's where the trouble begins)
    I figure that when we accelerate the ball bearing rolls back and momentarially TURNS ON the under hood light...Think about it...
    OK so how do we go about checking this out? Camera under the hood?
    Small child strapped to left inside fender well? (My personal favorite)
    "Inquiring Minds Need To Know"
    Architect
    Put a bulb with low voltage rating, it will act a a fuse and burn upon power up.

    Do your launch, then carefully open the hood and pull the bulb before contact would be made.
    ============================== ===
    Forget directions, I need to file a flight plan
    ============================== ===

  7. #7
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    Quote Originally Posted by Joe Walsh View Post
    It's like the refrigerator light....impossible to check it!....
    Funny, but, I asked the little guy that turns the fridge light on and his bro is under my hood as it turns out and he says inertia doesn't force him to turn it on unless you have a blower and hook really well.
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  8. #8
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    Quote Originally Posted by Joe Walsh View Post
    It's like the refrigerator light....impossible to check it!....

    Mine is always on.

    My kids say the trunk light goes off when it is closed.

    11.98 @ 115 mph
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  9. #9
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    Quote Originally Posted by DEFYANT View Post
    Mine is always on.

    My kids say the trunk light goes off when it is closed.
    LOL....

    I'm guessing that you snipped off the glow-in-the-dark emergency release handle??
    2020 Ford Ranger STX DFI Turbo 2.3L 10 speed Auto
    2017 Ford Fusion Sport DFI Twin Turbo 2.7L V6 6 speed Auto (14.000 ET bone stock in 82 degree heat)
    1985 Mustang GT 5.0 Hatchback 4bbl 5 speed manual (525 HP 363 Dart block/AFR heads with Magnum 6 speed in the works)
    1984 Mustang GT 2.3 Turbo Convertible FI. 5 speed manual
    1966 427 Cobra (ERA) 468 all Aluminum FE 2x4bbl 5 speed manual

    SOLD : 2003 Mercury Marauder FI. 4 speed Auto
    w/Crower Cams & Springs, +1mm SS valves, mild port job on the cylinder heads.
    Extrude honed intake w/PHP spacer.
    Kooks Headers w/2.5" High Flow Cats & X-Pipe, Magnaflow mufflers, OEM tailpipes w/Megs Tips
    B&M Trans cooler w/fan, Level 10 Shift Kit, Art Carr Hughes Deep Sump Trans Pan,
    SVO Rearend Girdle, Redline Gear lube; OEM 3.55s
    'Real Gauges' + matching Trans Temp, Oil Temp, Water Temp, Fuel Pressure, Vacuum/Boost Gauge
    Built: 10/15/02 Bought: 12/16/02 Sold: 10/15/18

  10. #10
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    Quote Originally Posted by Joe Walsh View Post
    LOL....

    I'm guessing that you snipped off the glow-in-the-dark emergency release handle??
    What handle? Is that how they kept escaping! haha

    11.98 @ 115 mph
    "Comfort, Class and Hair on Fire Performance."

  11. #11
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    You guys are nuts.

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  12. #12
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    Quote Originally Posted by Joe Walsh View Post
    It's like the refrigerator light....impossible to check it!....
    Not if you got somebody you trust to open the door.

  13. #13
    Join Date
    Jan 2005
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    Just South of Memphis, TN
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    Thumbs up I think I got it...

    I've got some fiber optic cable... I think just one strand from the light back to under dash... so I can see it will give us the answer we require...
    And YES I have too much time on my hands...
    I will post my scientific results...
    Pondering Lifes little Mysteries...Architect
    Modifications to my 2004 Mercury Marauder:
    "Xcalibrator SCT" Flash...BEST MODIFICATION...
    "Ford Racing" 410 gear
    18"X8.5" Black Bullitt Wheels
    Black Lugs and Black Aluminum Valve stems
    "Ford Racing" Center caps
    Black Wilwood Brakes (fronts)
    A-Pillar Mounted "ScanGauge II"
    "Powered By Ford" coil covers
    30% Window Tint
    "X-pel" Light Shields
    "Magnaflow" Stainless Mufflers
    "Pro-gard" skid plate
    "WeatherTech" window deflectors
    "Stealth Tech" Parking/turn lamps
    Rear Spoiler
    "Sylvania" Silver Stars headlight lamps
    "Kenny Brown" dead pedal
    "Megs" delete resonator tips
    "SS" Titanium Inserts
    Blacked out window trim

  14. #14
    Join Date
    Oct 2002
    Location
    USA
    Posts
    445

    Pondering.....

    Quote Originally Posted by Architect View Post
    I've got some fiber optic cable... I think just one strand from the light back to under dash... so I can see it will give us the answer we require...
    And YES I have too much time on my hands...
    I will post my scientific results...
    Pondering Lifes little Mysteries...Architect
    ============================== ===
    Forget directions, I need to file a flight plan
    ============================== ===

  15. #15
    Join Date
    Jan 2005
    Location
    Just South of Memphis, TN
    Posts
    624

    Thumbs up OK All tests are in...

    I ran a Fiber Optic Cable from the under hood light to the top of my steering column...
    The picture with the fibre optic lighted was with the hood open... and the underhood light shinning brightly...obviously
    The next photo is with the hood closed and no light being omitted from the cable... obviously
    Not even parked on a 30 degree hill could I get the hood light to come on...I even tried backing up and slaming on the brakes...NOTHING
    Now I'm really curious...I've got to get a hold of another underhood light to dissect... anyway my question has been answered...
    Architect
    Last edited by Architect; 10-21-2015 at 08:58 AM.
    Modifications to my 2004 Mercury Marauder:
    "Xcalibrator SCT" Flash...BEST MODIFICATION...
    "Ford Racing" 410 gear
    18"X8.5" Black Bullitt Wheels
    Black Lugs and Black Aluminum Valve stems
    "Ford Racing" Center caps
    Black Wilwood Brakes (fronts)
    A-Pillar Mounted "ScanGauge II"
    "Powered By Ford" coil covers
    30% Window Tint
    "X-pel" Light Shields
    "Magnaflow" Stainless Mufflers
    "Pro-gard" skid plate
    "WeatherTech" window deflectors
    "Stealth Tech" Parking/turn lamps
    Rear Spoiler
    "Sylvania" Silver Stars headlight lamps
    "Kenny Brown" dead pedal
    "Megs" delete resonator tips
    "SS" Titanium Inserts
    Blacked out window trim

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