Big 3 Upgrade: I've searched, but...
Google AD244 upgrade. Or search the forum.
You should also start with cleaning up all of your ground points. What size battery is in your truck right now? I had a small pos the the PO installed and had issues with dim lights myself even after the big 3. I cleaned my grounds and put a decent battery in it and no more dim lights. I do have a larger alt now as well for my winch and such and I only get about .5v drop at idle while running the winch

Was super simple to install too, took all of 20-30 minutes from removal to having it started and running.
The alt for me was 60 used.... the best was 40 or so for a 7/8th inch longer belt. then the painless harness since I have a first gen, not plug and play like a second gen.
Was super simple to install too, took all of 20-30 minutes from removal to having it started and running.
Was super simple to install too, took all of 20-30 minutes from removal to having it started and running.



