I installed a Back-Off directly to the rear lens. Located the Brakelight wire and spliced in the unit and ground wired. Works as it should with the engine key "on" and not started or with the engine running. The unit fits inside the plastic box too. JOHN
Don't know much about the BACK-OFF modulator, but the Vizitec Supabrake modulator was plug and play. Took longer to get the seat off than it did to install it. Vizitec guys definitely did their homework.