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As I’ve worked on my car, I’ve found myself constantly disconnecting the battery. So I finally ordered a battery disconnect switch and had a question regarding placement. There seems to be some debate on whether to place the switch on the positive or negative side of the battery. I’d love some of the members’ thoughts on this. Thanks.
Here is the one I ordered. It’s made by GAMA and is American made. Would the splice type be preferred?
Last edited by Jeff2761; Mar 6, 2025 at 03:28 PM.
Reason: Photo Added
Near the battery on the Ground Line is Correct. Just be ware that some of the disconnects "make/break" connections really fast when opening or closing, like one that is being screwed down on the top of the switch. A lot of electronics don't like this and it can cause them to fail. It is better when you make a clean "On" and "OFF" action. when switching power.
I switched my C3 over to a Marine (grade) Circuit Breaker which is easy to turn ON and OFF and you can buy one rated for the size you need online now days. The one I have is water resistant and not water proof but I have it near my battery so you would have to know it is there.
Here is the one I ordered. It’s made by GAMA and is American made. Would the splice type be preferred?
I would recommend you get the knife style of disconnect as so many show above. They are much easier and quicker to engage/disengage, especially for the location of our batteries. I used the **** style like you show for years but last summer put in a knife style and wouldn't go back. Mine is mounted on the side post of the negative and stands upright in the compartment. Very easy operate so that I am less lazy about using it.
From: Loud, Raw and Dangerous 1968 327 4S in Southern California
Originally Posted by 67:72
I would recommend you get the knife style of disconnect as so many show above. They are much easier and quicker to engage/disengage, especially for the location of our batteries. I used the **** style like you show for years but last summer put in a knife style and wouldn't go back. Mine is mounted on the side post of the negative and stands upright in the compartment. Very easy operate so that I am less lazy about using it.
I agree....first put one of the **** ones on and had some contact issues when I tightened it too much. Knife version is much easier to use and I sleep better at night with the cars 57 year old wiring disconnected.
Battery Disconnect
