After swapping out my subwoofer to no avail, I'm starting to think the factory subwoofer amp may be toast. Still got a couple fuses to check. If it is, what the easiest and least expensive option to get the subwoofer working again?
Here is what I did, https://www.expeditionforum.com/threads/stereo-upgrade-keeping-stock-head-unit.37934/
Thanks, I'll read that over later. I am going to eventually replace the factory speakers and head unit, but it's a later project if possible.