PeachParts Mercedes-Benz Forum

PeachParts Mercedes-Benz Forum (http://www.peachparts.com/shopforum/)
-   Diesel Discussion (http://www.peachparts.com/shopforum/diesel-discussion/)
-   -   Remove negative battery cable when replacing marker lamp??? (http://www.peachparts.com/shopforum/diesel-discussion/221968-remove-negative-battery-cable-when-replacing-marker-lamp.html)

Brian Carlton 05-11-2008 04:43 PM

Quote:

Originally Posted by ForcedInduction (Post 1851596)
Just replace the bulb and don't worry about the battery. Haynes only says that to cover their butts.

I agree. I rarely disconnect the battery for electrical work. But, I'm quite careful with any exposed positive leads. I do realize the risk that I take...........and I trust that the circuit is properly fused to prevent any damage should I screw up.

Hatterasguy 05-11-2008 05:23 PM

I almost never disconnect the battery; the only time I can remember doing that was when I wired up the new radio and changing the alt.

Thats what fuses are for!:D;)

On a lot of new cars you cannot disconnect the batteries, if you do you have to reset everything.

Wodnek 05-11-2008 06:29 PM

When I was a teen I remember disconecting the positive first. The wrench contacted the alternator and caused me to change my pants.

ForcedInduction 05-11-2008 06:47 PM

Always remember to disconnect the negative terminal first and reconnect the negative last. Negative-positive, positive-negative.

lietuviai 05-11-2008 11:01 PM

As a young wrencher there were a few occasions where I removed the + terminal. I still have the wrenches with spot welds on them.:o

pawoSD 05-11-2008 11:10 PM

???? I always remove the + cable first when disconnecting the battery....and have never had a problem..... :confused:

bustedbenz 05-12-2008 12:05 AM

Quote:

Originally Posted by pawoSD (Post 1851968)
???? I always remove the + cable first when disconnecting the battery....and have never had a problem..... :confused:

The theory (which some of these spot welds proves) is that, if you go on disconnecting the positive side first while the battery is still solidly grounded, then eventually you'll mess up, your wrench will hit the car's body work or something else that's also grounded, and your wrench will therefore turn into a 12 volt arc welder dead shorted to itself.

Removing the ground first ensures that even if you touch the positive to something else, that something else can't be grounded to the battery so you won't form a circuit.

I always do it in this order when I'm actually working on the posts... but i will be the first to admit that I pay absolutely no attention whatsoever to which of the four jumper cables I hook up in which order while doing a jump-start. I ensure that they aren't going to short anything out, obviously, but other than that I don't try to do a certain order.

Jimmy Joe 05-12-2008 12:36 AM

Nice to see some thoughtfulness in this thread !

I have cut some corners due to laziness and have often regretted it. I shorted stuff out a couple times, thankfully no big damage, but left thinking "why did i not disconnect the battery?"
It is a good habit to be in, for sure.

...just thinking out loud here...
Calling folks clowns when they respond to your thread is a great way to get yourself put on a good number of 'ignore' list real fast, though.
Especially when you are getting mildly 'checked' for asking advice on skipping something as simple as one nut !

Be nice, people here wanna help, but not get called names.

pawoSD 05-12-2008 12:50 AM

Ah yes I see....I guess I will be careful then! :D ;)

Quote:

Originally Posted by bustedbenz (Post 1852038)
The theory (which some of these spot welds proves) is that, if you go on disconnecting the positive side first while the battery is still solidly grounded, then eventually you'll mess up, your wrench will hit the car's body work or something else that's also grounded, and your wrench will therefore turn into a 12 volt arc welder dead shorted to itself.

Removing the ground first ensures that even if you touch the positive to something else, that something else can't be grounded to the battery so you won't form a circuit.

I always do it in this order when I'm actually working on the posts... but i will be the first to admit that I pay absolutely no attention whatsoever to which of the four jumper cables I hook up in which order while doing a jump-start. I ensure that they aren't going to short anything out, obviously, but other than that I don't try to do a certain order.



All times are GMT -4. The time now is 06:24 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website