TM 9-2320-209-20-3-1 c. Replacement. 1. Hold switch (1) below panel (2) and plug two connectors (3) into switch as tagged. Take off tags. 2. Look at ON-OFF position markings on switch (1). Set switch to OFF position. 3. Put switch lever (4) through hole from behind panel and aline screw holes. 4. Hold switch (1) in place and screw in two screws (5). Using tighten screws. NOTE Follow-on Maintenance Action Required: 1. Reconnect battery ground cable. Refer to para 2. Operate manifold heater to check switch. Refer TM 9-2320-209-10. END OF TASK screwdriver, 7-58. to 7-249