i got a deck then it touched some metal and now the speaker wires don't work so i wanna know what the ohms are for resistors or capacitors some are 10-15v but i don't know how much ohms they are or how to check to see if there good i was thinking maybe hooking it up too a 12v battery and seeing if they measure the correct voltage but i don't wanna arc anything when testing it out any ideas how i can see if there ok