This is a better way of doing it… http://www.mbclub.co.uk/forums/electronics/58144-connect-navman.html … not a good idea cutting the plug off.
Dec
Dec
Baron_Samedi
MB Enthusiast
One for the MB, one bought by my work for in my works car, and one just bought this year with Florida maps on for holidays.
The bit of the power lead that plugs into the cigarette lighter socket for all three states, "input 12V - output 5V 2A"
Russ
Sweet, so the ciggy plug has the regulator in it
Just before you do that, remember that most of those 12v cigarette lighter plugs have a fuse built in (accessible by unscrewing the end), so if you cut it off you are without safety fuse.
R
Baron_Samedi
MB Enthusiast
The TT will act as the fuse if powered from 12V 
SilverSaloon
MB Enthusiast
- Joined
- Mar 16, 2004
- Messages
- 7,758
- Car
- 1994 W124 E300D Estate, 1985 R107 280SL
I hard-wired in SWMBO tomtom into her Alfa yesterday.
I simply spliced into the cabling at the rear of the cigarette lighter which works off ignition and then routed the new cable through to the inside fusebox which is inside the dash behind a "door". this is a large space where I connected these new 12v wires up to the existing TomTom cigarette ligther plug, wrapped the whole thing in insulation tape and then the tomtom cable is routed up the dash, along the windscreen and into the device. So no cutting required. The live wire was inserted into the tomtom plug by unscrewing the tip of the cig lighter plug, and then screwing it back on with the wire on - then insulated. the negative wire was wrapped around one of the side terminals and insulated. Quick and easy, bit of a bodge on the connection side but who cares and it works, and cost £0 & leaves the cig lighter free for other accessories.
I simply spliced into the cabling at the rear of the cigarette lighter which works off ignition and then routed the new cable through to the inside fusebox which is inside the dash behind a "door". this is a large space where I connected these new 12v wires up to the existing TomTom cigarette ligther plug, wrapped the whole thing in insulation tape and then the tomtom cable is routed up the dash, along the windscreen and into the device. So no cutting required. The live wire was inserted into the tomtom plug by unscrewing the tip of the cig lighter plug, and then screwing it back on with the wire on - then insulated. the negative wire was wrapped around one of the side terminals and insulated. Quick and easy, bit of a bodge on the connection side but who cares and it works, and cost £0 & leaves the cig lighter free for other accessories.
fatboydel
Active Member
I bought a two port extension lead, cut the plug off and wired it in to the back of the Cig socket, then hid it under the dash, so I can plug the TomTom in out of site, plus something else. The double socket I bought had a mounting plate, so it was easy to fix it up out of site.
