hopefully, your cap should be marked pos and neg or + and -. If not, the manufacturer should be summarily executed!!! Provided your amp already has a sufficient power cable run from the battery, you'll want to T-off this cable as close to your amp as possible, connecting it to the pos. side of the cap. The neg side of the cap should then be connected securely to the nearest ground spot, again using a thick gauge wire/cable. It's that simple!!