Usually infinity sticks em right to the back of the speaker in a little mount. I've found em like that twice, so check that. Also, if thats the case, there are four wires leading to the bocx (amp + and -, & speaker level + and -), you only need two of them on the new speakers. The two that are the larger guage should be the power wires, the two thinner ones should be the signal ones... but you may want to check with a DMM just to be sure, cuz it might be different on various cars.