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old 924
Joined: 06 Mar 2012
Posts: 184
Location: clinton twp MI. USA
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 Posted: Tue Jun 05, 2012 10:07 am Post subject: under hood light |
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this is being ask'ed on pelican so i thought i would ask it here..how dose the under hood light come on with an early 924..?? do you have to turn on your blinker's, turn on youe parking light's or just open your hood..i was just thinking mine just didnt work and i would get to it in time..i cant test what they were saying cuz my blinker & wiper stock's are takein off right now..who's work's the way it should...???
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base 77 924 2.0 (may the porsche be with you) |
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brealytrent
Joined: 28 Dec 2008
Posts: 414
Location: Goldsboro, NC
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| Posted: Tue Jun 05, 2012 4:27 pm Post subject: |
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This is something I would like to know as well. I would make the assumption it only comes on if the lights are up - aka in parking light or regular lights on position - and I wonder if there is some way it senses that the hood is up? Perhaps a mercury switch?
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1977 Porsche 924 - sold
1980 Porsche 931 - sold
1984 Porsche 928 'S2' Euro - sold
2016 Ford Fiesta ST - sold
2009 Porsche Cayman |
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!tom
Joined: 28 Aug 2006
Posts: 1941
Location: Victoria, BC Canada
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| Posted: Tue Jun 05, 2012 5:19 pm Post subject: |
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Looking at page 246 of the Hayne's manual at the wiring diagrams for the '77 - '78, it appears as though the underhood light comes on with the parking lights.
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78 924 NA
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old 924
Joined: 06 Mar 2012
Posts: 184
Location: clinton twp MI. USA
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| Posted: Tue Jun 05, 2012 7:16 pm Post subject: |
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| !tom wrote: | | Looking at page 246 of the Hayne's manual at the wiring diagrams for the '77 - '78, it appears as though the underhood light comes on with the parking lights. |
tom is that the way your's work's..??some ppl on pelican were saying with the early 944's up to the 951 that you had to turn on your blinker and (or) turn on your running light's...so it is just turn on your running light's and for get the blinker thing...??
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base 77 924 2.0 (may the porsche be with you) |
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staticsan
Joined: 19 Jan 2009
Posts: 450
Location: Sydney, Australia
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| Posted: Tue Jun 05, 2012 7:33 pm Post subject: |
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| old 924 wrote: | | !tom wrote: | | Looking at page 246 of the Hayne's manual at the wiring diagrams for the '77 - '78, it appears as though the underhood light comes on with the parking lights. |
tom is that the way your's work's..??some ppl on pelican were saying with the early 944's up to the 951 that you had to turn on your blinker and (or) turn on your running light's...so it is just turn on your running light's and for get the blinker thing...?? |
I think I know why that is mentioned. The under-hood light is indeed linked to the parking lights. But if the ignition is off, you can turn on half your parking lights by moving the blinker stalk (move it the other way for the other side). This is a German Car Thing. The idea is if you park on a road without street lights, you turn on the road-side ones so people can see you. Since the under-hood light is linked to the left parking light, it will come on, too.
Wade.
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'82 British NA - Which I think I've been very lucky with! |
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Harm
Joined: 02 Apr 2009
Posts: 1376
Location: Holland
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| Posted: Wed Jun 06, 2012 4:19 am Post subject: Re: under hood light |
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 < Hood up / Closed loop / Engine compartment illuminated.
 < Closed hood \ Loop open \ No light.
Feed: L29, Engine Compartment Light, Current track 29 (?!)
BUT… It's the first line in here #21
and gets the Voltage dosis from A9, that would be your
Left parking light and/or US Front side marker light
switched ON.
| staticsan wrote: | | This is a German Car Thing. |
Uuhw… European? 
Kind regards, Harm.
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Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone. |
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staticsan
Joined: 19 Jan 2009
Posts: 450
Location: Sydney, Australia
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| Posted: Wed Jun 06, 2012 10:47 am Post subject: Re: under hood light |
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| Harm wrote: |
| staticsan wrote: | | This is a German Car Thing. |
Uuhw… European?
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Probably. But I've only ever seen it on German cars.
Wade.
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'82 British NA - Which I think I've been very lucky with! |
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!tom
Joined: 28 Aug 2006
Posts: 1941
Location: Victoria, BC Canada
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| Posted: Wed Jun 06, 2012 2:05 pm Post subject: |
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| old 924 wrote: | | tom is that the way your's work's..?? |
Nope.
Mine's busted. I've never bothered to even investigate it.
I also haven't bothered to look at the wiring diagram for my year. Things change from year to year, and I have no idea if that's one of them.
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78 924 NA
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Glemon
Joined: 05 Jan 2016
Posts: 267
Location: Lincoln, NE
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| Posted: Sun Jun 05, 2016 12:14 pm Post subject: |
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Is this a great board or what? Put my underhood light on, didn't work, looked for a switch, no luck. Searched the Googles, this came up. Not sure if it is crazy or brilliant, but I guess better than running the battery down if you leave the hood up a day or two. Mine works, but it takes a tap or two, assume that's is the mercury switch, I scuffed up all the contacts on the bulb.
Know I am reviving an old thread, but maybe it will solve a mystery for someone else too.
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musicalannette
Joined: 21 Feb 2012
Posts: 413
Location: UK
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| Posted: Mon Jun 06, 2016 2:37 pm Post subject: |
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there is an inline mercury switch behind the bulb. the power is fed from the sidelights-maybee different on cars with the steering wheel on the wrong side-then the mercury swich is an in line bulb for turning it on and off when you open the bonnet. its probably a dirty connection there.
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