Trying to wire my new prodigy controller. I have the adapter wire for 03-04 HDs (mine is 03) but I can't find where under the dash to plug it in. I believe my truck does have the tow package. Is there an obvious receptacle, or does something need to be exposed, like the block heater does?

Look just to the left of where a clutch would be. You will see a black cover. Remove the big plastic nut in the middle and release the 2 clips on the sides. Then you will expose a electrical panel. It plugs into one of the top left holes.

There is a black plastic box about the spot that your left foot would be at the top edge of the carpet. Unscrew the black plastic screw and remove the black plastic cover. Been awhile since I looked in there, but I believe it plugs into the space on the top left and then route the wires out and along the bottom side of the dash to your controller.

Draw!!

He just can't be beat!

In the time it took me to post this, go back outside and look one more time to see if I was just stupid, you guys did all this? I found the black cover and plugged it in. Works great. Next time I will dig a little deeper. Thank you all.

Glad to be of help!