Operating instructions

Timer installation instructions:
1. Select a suitable location in the vehicle dash for the timer.
2. Temporarily affix timer drilling template to dash or see timer dimensions.
3. Cutout hole to dimensions on template or timer dimensions.
4. Mount timer bezel to dash.
5. Route harness between heater and dash, secure harness along its length with wire ties.
If possible, use existing hole in fire wall or drill in suitable location. Protect the harness with a
grommet at the fire wall.
6. Connect the terminals of the harness to the timer. See figure 409 below and wiring diagram figure
411 for reference.
7. Push timer into place in dash bezel.
Fig. 408: On/Off Toggle Switch
Fig. 409: Optional 7-Day Digital Timer
420
4 Installation Thermo Top C (TTC)