Common-failure electrical parts for the Wrangler JL (2018+) & JT. Each page lists the current Mopar number, what it supersedes, aftermarket equivalents, failure symptoms and whether to rebuild or replace, with a source for every number.
| Part | Mopar # | Fits |
|---|---|---|
| Auxiliary Battery (Stop-Start) | BBAUX101AB | JL Wranglers with engine stop-start, per Mopar dealer catalogs. BBAUX101AB supersedes BBAUX101AA and several... |