TM  10-3930-643-34 GENERAL  MAINTENANCE  PROCEDURES.  (cont) 2-13. Electrical  Repair.  (cont) NOTE Before using the multimeter, check the mechanical zero of the meter. If the meter pointer is not exactly over the zero line, reset by using proper size screwdriver to adjust the small screw. (a) AN/URM-105. Set meter switch to 1000  AC  volts. (b) TS-352 B/U. 1 Set FUNCTION switch (1) to AC. 2 Put black lead (2) in OHMS-DC/± AC jack. 3 Put red lead (3) in 250V jack on right side of meter. f. Repairing  of  wiring  harnesses  and  cables  consist  of  replacement  of defective  connectors,  shells  and  terminals  or  taping  cut  or  worn  insulation  and exposed  wire  conductors. The  following  disassembly  and  assembly  procedures  are to help you make replacement and repairs to electrical wires and cables. 2-16