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Headlamps won't turn off
'82 Euro 928
Got some issues now that the idiot at Adv Auto put my battery in backwards. Fried the alternator (literally smoked the diodes) and my head lamps seem to light when the key is off as long as the battery is connected. regardless of headlight switch position. I disconnected the alternator -- and limped home. I'll pull the alternator tmrw, I was able to get them to pop up and rescind -- but they would not turn off. Any debug suggestions? Not sure if there was any other collateral damage. She seems to be running fine. Mike
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2015 Panamera Hybrid, 2008 Cayenne Twin Turbo 2001 996 GT2 1999 Spec Boxster, 1996 993 Cabriolet 1992 964 Cabirolet, 1975 911 RSR Replica Race Car Last edited by txhokie4life; 11-05-2011 at 05:26 PM.. |
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11-05-2011, 05:19 PM
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When mine did that it was a bad relay. If your relying on places like Advanced autoparts for your 928 maintenance you will probably be in for a lot more experience like this, not to be a dick but I'm just sayin'
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1979 928 85 Euro 2v motor,S4 Brakes and suspension, 1988 951 street legal track car(sold) Neon SRT4 track car |
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11-05-2011, 06:50 PM
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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OUCH!
Group 49 battery has some juice, good news is I think that with key off many things were disconnected. The alternator, starter, jump post, and CE panel all have direct unfused connections to the battery, but I "think" most of the CE panel is fused. Start checking fuses and relays, might as well make it a whole normal PM of the electrical system. I would not be surprised to see other things failing soon from the damage, but I don't know of my who have connected a battery backwards, its not easy to do. |
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11-05-2011, 07:01 PM
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Registered
Join Date: Mar 2011
Posts: 470
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Document everything because they should pay the bill but you will have knock on the right door
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11-05-2011, 07:19 PM
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Wow, I usually just buy a battery and install myself. I didn't know Autozone would even put themselves in such a position. The 928 is an electrical nightmare already, throw reverse polarity in there and you've just downright crossed into the Twilight Zone.
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** 
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11-06-2011, 05:56 AM
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I was already in Twilight Limbo -- this either put me over the edge -- or maybe
it burnt out any gremlins hiding in the zone :-) mike
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2015 Panamera Hybrid, 2008 Cayenne Twin Turbo 2001 996 GT2 1999 Spec Boxster, 1996 993 Cabriolet 1992 964 Cabirolet, 1975 911 RSR Replica Race Car |
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11-07-2011, 07:04 AM
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Architecture & Porsche's
Join Date: Jan 2006
Location: Austin, Texas
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Mike did the relay check out?? I probably have an extra since it's not the normal "53" i imagine.
Mark
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Porsche Club Racing National Scrutineer '89 Andial 951 '82 928R '74 911 RSR 3.6 |
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11-08-2011, 05:11 AM
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1988 Porsche 951
