PAC TR-4 Low-Voltage Remote Turn-On Trigger: * Use in any amp installation where a remote turn-on is needed * Use when adding a subwoofer and amp to a factory system * Replacement for the ford antenna remote * Has a 1-sec turn-on delay that eliminates pops * Supplies up to 2A of current with a trigger of as little as 0.8V DC * Will turn on multiple amps or a power antenna * Uses a speaker lead or a low-voltage trigger lead to switch 12V on and off