Installation Instructions 7-Day Digital Comfort Timer Model 1531 for Thermo Series Installation Instructions Dash cut-out dimensions for mounting without frame. Length: 3.32" (84.5 mm) Height: 1.5" (38.2 mm) Corner Radius: 0.12" (03.0 mm) Depth: 2.0" (51.0 mm) 1. Find a suitable location on the dashboard. Ensure at least a 2.0” (51.0 mm) depth clearance before cutting into the dashboard.
Page 2
Installation Instructions 7-Day Digital Comfort Timer Model 1531 for Thermo Series Operation *Truck Installations Operation with C-plug to battery positive: Press the “Instant heating” button. The heater remains “ON” until the “Instant heating” button is pressed again and switched “OFF”.