A cobra alarm would have been an aftermarket addition to your car, as a result it could be any of their models.
I wanna use resistor , capacitor and amplifier 7173 for switch alarm circuit. How can i choice resistor and capacitor value because i wanna use 24V DC.
No its not. Its for 24v security cameras.
You don't. 2 12v panels together don't make 24v - doesn't work that way. If you need 24v you need to get 24v panels.
Of course it is bad, whether it`s humming or not.
Apply 24v and listen for click Ck coil for open with ohmmeter Clean contacts if possible
No
No
You need a DC power supply in order to connect a 24v DC motor to household power.
You need a 24v to 12v converter. Truck stops either keep them in stock or can get you one.
The general public can buy a Bosch 24V battery in many electronic shops. For example, Bestbuy sell the Bosch 24V battery for a very low price. There are many other shops and web-shops that sell them.
You don't need anything. A 24v system is the cranking volts. The accessories are done for 12 volts.
No