Kussmaul Electronics 091-9-12V - Manual (Page 4)

III. VEHICLE WIRING OF THE AUTO PUMP 12V
1. Remove cover of the Pressure Switch on the Auto Pump.
2. Wire the pressure switch to the battery and a good chassis ground, use #12 AWG WIRE MINI-
MUM. CAUTION: Observe Correct polarity connections Red Wire to
3. Reinstall cover of Pressure Switch.
4. The compressor is calibrated to cut-in at 75 PSI and cut-out at 95 PSI . For higher cut-in and
cut-out, turn the range nut clockwise. To lower cut-in turn range nut counterclockwise. Do not
exceed 100 PSI
5. The 091-9-12V Auto Pump can be wired to a positive or negative system vehicle.
6. Install 15 Amp (SLO-BLO) fuse, see diagram below.
7. Optional 20 Amp Rated Switch can be installed, see vehicle wiring diagram
IV. VEHICLE WIRING DIAGRAM
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