PERFORMANCE TASK, AND JOB NO. 1-3 JOB 1, 1 SWITCH CONTROL 1 BULB JOB NO. 3 1 SWITCH CONTROL 3 BULBS use heat gun to soften the pvc. and after that, little by little bend the pvc like an elbow. ELBOW BENDING PRACTICAL (ELBOW BENDING) 1 SWITCH CONTROL 2 BULBS, 1 SWITCH CONTROL 1 BULB. SWITCH 1 CONTROL BULB A, SWITCH 2 CONTROL BULB B.