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Registered
Join Date: Aug 2004
Location: Wisconsin
Posts: 4,362
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interior dome light help needed
The side interior (dome) lights on my 77 911S (sunroof) will not go on. These are the "rocker" switch variety that I believe are either off always, on always, or on when door open, depending on where you position the rocker switch/lens. I pulled the assembly out and tested the leads (there are two in my case). I have twelve volts to ground at both leads. This conditon remains whether or not the door is open or closed on each lead. I know that typically in order for this to work I should have 12v on one wire and ground to the other. I'm wondering if in this case I should have twelve volts to both because there needs to be a constant 12v to one side for "always on, and a switched 12v on the other wire for on when door open. Can anyone send me in the right direction on fixing this? tia.
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08-28-2004, 09:23 AM
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Registered
Join Date: Aug 2004
Location: Wisconsin
Posts: 4,362
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update
Ok-I now know that one side (unswitched) needs to be a constant 12v. The other side should be a switched ground/constant ground/no ground. I guess I'll have to open up the door switch to see why I'm getting 12v when I should just be getting a ground/open. Sound about right?
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08-28-2004, 09:45 AM
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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
Posts: 21,140
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the lite case must be grounded to the cabin thru the end tab.. so the connection is enabled with proper placement to a clean roof.
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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08-28-2004, 09:45 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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Did you check the fuse?
Do the lights refuse to come on under all conditions? They will not work w/ the door opening unless they are in the center position. Did you check the switches located in the A pillars (in front of the door)?
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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08-28-2004, 09:49 AM
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Registered
Join Date: Aug 2004
Location: Wisconsin
Posts: 4,362
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response
The fuse is fine. It has power. It will work if I move the headliner material allowing for a proper ground, but the switched ground wire still is reading 12v. I'll check the door jam switch next. Thanks
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08-28-2004, 01:18 PM
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