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Discussion Starter #1
New owner, getting Blue Ox baseplate and wiring harness installed next Wednesday. Will also ask to have a battery disconnect switch but where to mount it? Do members have such a switch and is it ossicle to mount inside the glove compartment. Thinking this might be good spot.
 

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The most convenient location for the switch is here:



as it has the shortest run to the battery:



I'm using the Hella 87181 battery disconnect switch (spare keys are: Hella 87185). If I had thought about it when I had the switch installed I would have chosen a switch (there are several different styles) that is less likely to get caught on a pant leg or dress. More pictures here.

There is even a way to have the battery disconnect switch located inside the car and still have the doors locked.
 

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Discussion Starter #3
wow, thanks for the pix and tips. Have base plate and wiring harness installed next week at Camping World near Indy. He fully they will know about the wiring and how to,install the disconnect switch.

First reaction, really, switch the negative pole. Would have never thought of that.

Thanks again

Bill
 

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wow, thanks for the pix and tips. Have base plate and wiring harness installed next week at Camping World near Indy. He fully they will know about the wiring and how to,install the disconnect switch.

First reaction, really, switch the negative pole. Would have never thought of that.

Thanks again

Bill
Putting the switch on the negative is considered safer. Also If you haven't already, I recommend viewing all of the pics in the link in my above post and read the comments that I added to them.
https://www.flickr.com/photos/gotsmart/sets/72157631099316816/

If you install a tail light kit and locate the receptacle below the front license plate then you'll need to reinforce it from behind. Also note the issue of running the diode wiring between the rear quarter panels. It should run inside the car and not through the engine bay. This is commented in the pictures.
 

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Battery disconnect switch

I ended up mounting my batt disc switch a little higher than manchvegas did. Rather than hanging vertical, mine is horizontal under the bottom of the dash. I also ordered wireless magnetic lights and made brackets for them to sit on. Mounted to the tailgate so you can see them through the back glass. They work great.

Hardybob
2104 white brabus
 

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I don't remember who, but, SOMEONE on this board mounted their's under the bonnet so they could lock the car and disconnect the battery from the outside :)
 

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Here's another way to lock the car for flat towing with an interior-installed battery disconnect switch. It requires 2 FOBs:

1) sit in the car's driver seat, with both doors rear gate/window closed.
2) lock the doors then open the driver-side door.
3) Follow your flat towing set up instructions - except stop when you get to using the battery disconnect switch.
4) with the 2nd FOB in hand, press the lock button. It will lock the doors - BUT - because the driver door is open it will then unlock the door after about a half second. This means that you have about a half second after pressing the lock button on the 2nd FOB to disconnect the battery using the battery disconnect switch.
5) complete your flat towing set up instructions
6) exit the car and close the driver door

If done right the car will be locked.

Why the 2nd FOB? From what I can tell, when the FOB is in the ignition switch the lock button on it is disabled, but the lock button on the FOB in your hand will still work.

Notes:
a) After locking the doors the FOB won't function after the battery is disconnected. You will need a key or a key blank to manually unlock the driver door to reenter the car.
b) If you reenter the car after the battery is disconnected, you will not be able to lock the door afterwards. You will need to perform the "After Towing" instructions and then repeat steps 1 through 6.
 

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I'm a little slow with this one (and most electrical issues). How would you unlock the doors with the key fob if the battery is disconnected?
 

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There is a key hole on the driver's door that will unlock the door mechanically. The key is inserted, turned and the door will unlock only. You can not lock the door with the key.
Unless it has been removed, there is a plastic insert in the door lock that has to be removed before you can insert the key. It is basically a decorative insert that sticks in the lock and covers the face of the metal lock so that it doesn't stick out like a sore thumb in the middle of the all black, plastic door handle.
 

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I installed my disc switch a little higher on the horizontal part of the panel so it would be out of harm's way of feet. I used one 30 in cable and one 36 in cable if i remember. I also helped a friend install his in the same spot.

Hardybob
 

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I installed my disc switch a little higher on the horizontal part of the panel so it would be out of harm's way of feet. I used one 30 in cable and one 36 in cable if i remember. I also helped a friend install his in the same spot.
Hardybob
I also installed my cutoff switch in the horizontal part of the panel, with the switch handle pointing towards the front of the car so it wouldn't get accidentally knocked to the off position.


.
 

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I've towed my Smart about 50,000 miles without a battery switch. Other owners I've talked to in campgrounds don't use one.

Your choice, of course. The potential danger of not disconnecting the battery has been well discussed.


Cheers,
Ron


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