After going back and rereading your post it does sound like you may have the wires wrong. When you pop the hood and stand at the pass. front tire and look across that the solenoid you should only have one black wire on the LEFT side going to the starter. Now on the RIGHT post you may have as many as two big wires (one red and one is yellow) and two little wires (for a total of 4 wires) this is the positive from the battery. Then of course you have the little red wire on the top of the solenoid. If you have any wires on the left side besides the black one going to the starter then you need to move them to the right side. Remember only black on the left side and this is again if you are looking from the pass. side across the engine.How would you know if a new solenoid is bad? The first one I got was from Kragen, actually bought two and then went to the dealer and got it there. Could a wrong wire connected to a post on the solenoid make it go bad, or maybe a wire is on the wrong post making staying engaged?