16. Connect the pressure switch plug to bench terminal (h) and the two other bench leads to the terminals of a battery. The bench test lamp must illuminate. 17. Tighten bench bleed screw (3) and operate the pump to build up the pressure progressively (pressure gauge M1) until the test lamp goes out. This should occur between : - 55 and 85 bars (800 and 1230 psi) for vehicles —x 3/1973 - 75 and 95 bars (1067 to 1351 psi) for vehicles po» 3/1973