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-   -   Battery Cutoff Switch (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/92983-battery-cutoff-switch.html)

SlickGT1 08-12-2013 11:23 AM

Very nice install Term. I just got mine too. Can't wait to install it. Quick question, why such long bolts.

And to back to Lowes and get liquid electrical tape. I am copying your location.

TerminatorX5 08-12-2013 11:58 AM

Denis,

the bolts are long because i am using a piece of plastic conduit to offset the switch - without the offset, the red "key" sticks out too far and is cutting into the spare tire space and can touch the cargo "subfloor" cover. by pushing the "key" deeper into the cavity, you need longer screws... you also need to account for the wire that holds the "key" and that wire is fed through the one of the mounting holes of the switch, thus reducing the available diameter of the hole... the first set of bolts was fitting through one hole, but would not fit through the hole with wire holding the "key"... so, i went for a bit thinner bolts... I also used the self-locking nuts with the piece of plastic inside the nut, to avoid the thing from unscrewing...
I also hammered out the 90 degrees angle on the eye of the terminal because the angled way would not squeeze into the cavity...

very simple install...

SlickGT1 08-12-2013 01:32 PM

ahahaha, got you, very simple indeed. lol. I will advise as soon as I get a chance to undertake this.

TerminatorX5 09-24-2013 11:49 PM

Quote:

Originally Posted by SlickGT1 (Post 951295)
ahahaha, got you, very simple indeed. lol. I will advise as soon as I get a chance to undertake this.

Slick,

did you have a chance to knock this one off your list? :popcorn:

bcredliner 09-25-2013 12:05 PM

Some things to consider as far as placement.

Two important functions of a quick disconnect are accessibility and safety.

If you have anything heavy that is always in the cargo area it makes it harder to get to a disconnect under the floor. That crossed my mind last night when I was removing my steering wheel and needed to disconnect the battery. Prior to the quick disconnect I had to remove my subwoofer and the bottle before I could lift the floor.

A very similar quick disconnect is used in racing. The rules require one on the dash and one mounted on rear exterior of the vehicle. One of the first things emergency/safety personnel do when they arrive at an accident is disconnect the electrical. I didn't want to mount two and I didn't want it completely exposed but I felt it was a good idea to have it visible and accessible from inside or outside.

It's not that pretty but so far the reaction of the gearheads is positive and looky lous who ask about it often comment that it is a good idea.

If you go the exposed route the placement should be high enough, out of the way enough, or protected enough to minimize the risk that it will be inadvertently tripped and so you can still see and get to it.

I don't plan on ever selling my X but if you intend to do so at some point and want to remove the quick disconnect, locate the switch somewhere where any holes you need to drill can be repaired easily and at a reasonable cost.

TerminatorX5 09-25-2013 07:41 PM

:iagree:

my situation is slightly different... i need the disconnect for when the car is shipped, the shipping agents don't need to poke around the electronics with the inferior tools, they would just reach in and turn the key...

z168 09-25-2013 09:50 PM

I will probably change mine to how bcredliner did it. But I will probably keep it inside with the changer

oldskewel 12-27-2014 10:08 PM

I installed one of the OE Hella ones today. Just loose cables, tucked in on the side of the battery and under the spare wheel. Seems like it will work just fine.

But, I now actually think the best solution for me may have been to use one of those quick disconnect switches like this:
Battery Disconnect Switch

It looks like I would be able to reach through the wheel and turn the knob to enable/disable it. I have one of these on my old 911, which I don't drive so much, to keep the battery from discharging too much, and it has worked very well for many years now.

Either way, I'm glad I no longer have to remove the spare tire every time I work on the car.

TerminatorX5 12-28-2014 06:14 PM

I am not sure if I can reach to either of the battery terminals through the spare wheel's spoke openings... so, that setup probably would not work for me...

_XS3C_ 12-30-2014 05:41 PM

Terminator or Anyone else that might know, from where can I get this OE Hella switch WITH THE CABLES ? - [all previously posted links had either ended or sold out ...... I see only the switch with out the cables on E-bay ....] .

-- wondering how can you close the rear gate when you turn off the power ? - [shipping / long term storage and so on ....]


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