SL/R230: Wiring/Snaking battery tender to power cord for SL65
Thread Starter
Junior Member
Joined: Sep 2013
Posts: 17
Likes: 0
SL65
Wiring/Snaking battery tender to power cord for SL65
Hey Guys,
I recently bought a CTEK 3300 battery tenderer for my SL65 per the forums recommendation on search and plan on connecting it to my trunk battery.
Sadly, the beast is sitting outside in the driveway this winter
I wanted to see what's the best way to route the cord to outside the car to connect to power? I'd like to avoid ruining the weather stripping on the trunk due to a pinched cord if possible.
Any suggestions? Pics would be very helpful!
Thanks in Advanced!
-Rich
I recently bought a CTEK 3300 battery tenderer for my SL65 per the forums recommendation on search and plan on connecting it to my trunk battery.
Sadly, the beast is sitting outside in the driveway this winter
I wanted to see what's the best way to route the cord to outside the car to connect to power? I'd like to avoid ruining the weather stripping on the trunk due to a pinched cord if possible.
Any suggestions? Pics would be very helpful!
Thanks in Advanced!
-Rich
Senior Member
Joined: Feb 2002
Posts: 263
Likes: 148
SL65(R231), SL65(R230), 600SL, 560SL(86), 560SL(89),250SL(68),250SL(67), 190SL, 300SL(GW)
Rich:
I have a 2011 SL65........I also use a CTEK (a 7000). I used an existing vent orifice with a rubber grommet adjacent to the battery to run the wires. This did require a splice of the CTEK wires in order to hard wire the charger directly to the battery cables. Simple solution.....
Mike P
SL65,SL600,560SL,560SL,E300D,240D
2015 SL65 on order for son's grad gift
I have a 2011 SL65........I also use a CTEK (a 7000). I used an existing vent orifice with a rubber grommet adjacent to the battery to run the wires. This did require a splice of the CTEK wires in order to hard wire the charger directly to the battery cables. Simple solution.....
Mike P
SL65,SL600,560SL,560SL,E300D,240D
2015 SL65 on order for son's grad gift
Senior Member
Joined: Feb 2002
Posts: 263
Likes: 148
SL65(R231), SL65(R230), 600SL, 560SL(86), 560SL(89),250SL(68),250SL(67), 190SL, 300SL(GW)
The dual battery set up has created considerable confusion. Charging the trunk( consumer) battery is critical.......it runs the myriad computers which have a constant draw. The battery sytems are NOT connected....I have a CTEK 3000 to charge the engine starting battery. I do a monthly charge.....I do not keep them connected due to fear of an exogenous voltage spike (such as lightening). I also disconnect the battery from the charger via the CTEK supplied plug in connectors due to a reverse draw to the CTEK charger.......otherwise it remains lit.
Senior Member
Joined: Feb 2002
Posts: 263
Likes: 148
SL65(R231), SL65(R230), 600SL, 560SL(86), 560SL(89),250SL(68),250SL(67), 190SL, 300SL(GW)
Simple......separate circuits. Charging one battery does not charge the other. Get two CTEC chargers and make life simple.
Senior Member
Joined: Apr 2012
Posts: 432
Likes: 96
From: Just north of Detroit,Michigan
2012 E350 4Matic P2
This is a very complicated system. I'm not sure what the MB engineers wanted to accomplish by this elaborate electrical scheme. Certainly adds to the potential/probable future service department business as these works of art age. I don't know if they could have made it more elaborate.
Attachments will shed some light......................
Bob
