W114 Cigarette Lighter GPS - Mercedes-Benz Forum

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post #1 of 17 (permalink) Old 05-01-2014, 08:32 PM Thread Starter
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W114 Cigarette Lighter GPS

Hey guys,

I was curious regarding if it would be possible to power a portable GPS unit into the stock W114 cigarette lighter terminal?

I was told that it would not work because the stock terminal can't handle the increased power needed from a GPS unit and it would keep blowing fuses.

Is there a way to upgrade the stock outlet or some other way to get a portable GPS unit to be powered this way?

Thanks
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post #2 of 17 (permalink) Old 05-01-2014, 09:37 PM
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I would think that the lighter element would draw more current than a GPS system. Only way to find out is to try it...

I currently run my cell phone, RADAR detector and GPS off the lighter circuit in the 450SL. The one in the W114 cannot be that much different

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post #3 of 17 (permalink) Old 05-01-2014, 10:11 PM
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I run a GPS in my lighter outlet too, never had any blown fuses. W108 280 SE from 1970.
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post #4 of 17 (permalink) Old 05-02-2014, 06:41 AM Thread Starter
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OK thanks guys, I appreciate the input. The previous owner suggested against doing it because it would blow the fuses, that's why I asked.

Last edited by sandro_bit; 05-02-2014 at 06:44 AM.
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post #5 of 17 (permalink) Old 05-02-2014, 10:57 AM
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Cigarette lighter is way more current than anything else you are going to plug in there. the problem is that Mercedes old cigarette lighters are a slightly larger size and most modern plugs fit sloppy in the lighter hole. You can wedge something in to make better contact if you want... In my W123 I added extra power ports on the kick panel and inside the glove compartment.

Currently: 1967 250 SL, 1963 220Sb, 1965 300SE Lang, 1971 280SE parts car, 1972 Alfa GTV, 1965 Alfa Duetto, 1993 BMW R100R
Past: 1971 250 C, 1985 300 TD, 1967 250 S, 1968 280 S,1981 300 D, 1982 280CE, 3 Facel Vegas, Borgward Isabella Coupe, Alfa 2600 Sprint, Volvo P1900 (yes), numerous less interesting Volvos, ...
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post #6 of 17 (permalink) Old 05-02-2014, 02:43 PM
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I thought it was just my R107 lighter socket being worn out. I removed the ashtray and installed a plate with three outlets wired into the original circuit.

Current:
Reggie 2010 Range Rover Sport Supercharged
Monika '74 450 SL
BrownHilda '79 280 SL ex-Zender
Scarlett 2014 Jeep Cherokee 4wd
FoxyCleopatra '99 Chevy Suburban
Krystal 2004 Volvo S60
Gone:
Rudolf ‘86 300SDL
Bruno '81 300SD
Fritzi '84 BMW
'06 Volvo S60 AWD turbo
'97 Jeep GC
'96 Volvo 960
'96 Impala SS
'92 Subaru Legacy wagon
'74 Jeep CJ5
'71 Buick GS conv
'67 GTO conv
'63 Corvair conv
'57 Nomad
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post #7 of 17 (permalink) Old 05-02-2014, 11:19 PM
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Does fit if you nudge it gently in there, though! I've never had a plug fall out while driving, but I do see how it could be an annoyance, haha.
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post #8 of 17 (permalink) Old 05-05-2014, 02:24 PM Thread Starter
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I put the GPS into the cigarette outlet and it didn't work. Now I notice that the dash lights all went off and won't turn on at night.

I guess it did blow a fuse then.
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post #9 of 17 (permalink) Old 05-06-2014, 12:52 AM
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There's something deeper wrong with your wiring then. If the normal cigarette lighter works but a GPS won't, then I have no clue at all. Did it blow instantly or did it take time? Grasping straws because I genuinely do not know how that is possible.
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post #10 of 17 (permalink) Old 05-06-2014, 12:56 AM
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The cigarette lighter socket is not the standard size that the GPS plug is. It is possible that the GPS plug shorted out the cigarette lighter and blew the fuse.

Currently: 1967 250 SL, 1963 220Sb, 1965 300SE Lang, 1971 280SE parts car, 1972 Alfa GTV, 1965 Alfa Duetto, 1993 BMW R100R
Past: 1971 250 C, 1985 300 TD, 1967 250 S, 1968 280 S,1981 300 D, 1982 280CE, 3 Facel Vegas, Borgward Isabella Coupe, Alfa 2600 Sprint, Volvo P1900 (yes), numerous less interesting Volvos, ...
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