TCS-100 ELECTRONIC ENGINE IDLER Response Technologies, Inc.: Continuously monitors electronic load. Engages and raises engine rpm to preset speed when voltage drop exceeds alternator output for more than 20 seconds. Speed set by manufacturer`s ECM. On gas engines, system can be adjusted from standard idle to between approximately 1,100 and 1,300 rpm. Modular, plug-in design. Control panel fits in two-inch hole, requires one-inch depth, and connects to control module via data cable. Underhood components work from vacuum and are placed in engine compartment. Universal and vehicle-specific kits available. (800) 450-5445.