Brake Controller Wiring: Plug-and-Play vs Aftermarket
If the harness plugs into an existing connector, it is an owner job. If it involves the brake switch or a battery lead, it is brake-circuit work and it is a shop.
If the harness plugs into an existing connector, it is an owner job. If it involves the brake switch or a battery lead, it is brake-circuit work and it is a shop.