Will this work on a c5 corvette ?

Well, yes but. It's REALLY tight in there, up against the fuse box. Figure on cursing and scraped knuckles. You can't swing a wrench and a socket won't fit in there. I pulled the battery loose, first attached the - cable to the switch, then attached using the long bolt and my fingers. Finished up with a very short wrench from my toolbox. A real pain but the switch seems to work well and makes disconnecting a breeze.

Why does it have to be connected to the negative terminal and not the positive terminal?

That's ok, positive or negative can be connected. We recommend to install this cut off switches on the negative, not the positive, because lower current in negative, will be more safety. The switch can be install in the negative/positive wire, another short battery cable or cut existing cable and attach terminals on each end.

Will this fit a duralast gold 101-dlg? cadillac 2007 sts.

i bought it for 1977 corvette and it fit I am sure it will fit your sts.

Does this disconnect work on newer model cars

1. you will need about a 3" space next to the negative terminal in order to have room to install this switch. 2. depending on the vehicle you will need clearance for the "knife" to be up in order to close the hood, or it could be installed so it opens to the side if there is enough room there. 3. disconnecting the battery may require radio code for the radio to operate again after removing the power. Other functions may be affected too like the clock, possibly other functions as well 4. you will need the proper tool to tighten the bolt to the battery otherwise it will move about as you operate the switch. I am using this on a full size chevy snow plow yard truck (off road only) with plenty of room and I don't need the clock, that one does not need radio codes after disconnection. Look at the pictures carefully to decide if it will fit on your vehicle, if it fits, it will work.

Operation Mode	Off
Current Rating	200 Amps
Operating Voltage	24 Volts
Contact Type	Normally Open
Connector Type	Screw
Brand	Ampper
Terminal	Physical
Item dimensions L x W x H	2.76 x 3.74 x 2.95 inches
Circuit Type	2-way
Actuator Type	Hinge Lever
Contact Material	Brass
International Protection Rating	IP65
Number of Positions	2
Controller Type	Mechanical knob
Control Method	Touch
Connectivity Protocol	X-10
Color	Knife Blade
Unit Count	1 Count
Number of Items	1
EU Spare Part Availability Duration	1 Years
Manufacturer	Ampper
Vehicle Service Type	Compatible for Car, Vehicle, RV and Boat
Model	Am-CBSKB02
Item Weight	8.5 ounces
Product Dimensions	2.76 x 3.74 x 2.95 inches
Is Discontinued By Manufacturer	No
Manufacturer Part Number	Am-CBSKB02
Special Features	Used for car battery systems, compatible with GM side post batteries, disconnects the battery safely, eliminate any power draw from the battery when vehicle or boat is not in use, isolate and secure the electrical system

Ampper Side Post Battery Disconnect Switch 12V 24V, Knife Blade Battery Switch Disconnect Power Cut Shut Off for Car Boat RV ATV (with Long Bolt)

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