test and light switch 107 within the overall length 100 l are fitted the rear portion 120 center portion 130 and the frontal access shaft 110 the rear portion 120 is about equally long as the protector housing length 10 l the center portion 130 has a height 130 h that is about equal to the protector height 10 h the frontal access shaft 110 is at least as long as the protector housing length 10 l for an unimpeded insertion into a to be tested 5 terminal type telephone line connector eventually deeply recessed between other protectors 10 connected immediately adjacent other 5 terminal type telephone line connectors as may be well appreciated by anyone skilled in the art at an initial step during telephone line testing a protector 10 is removed from its 5 terminal type telephone line connector at that initial step and by manually actuating the test and light switch 108 the telephone line tester 100 may already be employed as a flash light to identify the location of the to be tested connector and its protector 10 the removed protector 10 may be connected to the connector socket 105 and tested by the telephone line tester 100 again by manually actuating the test and light switch 108 while monitoring the dual light led 107 the to be tested 5 terminal type connector may then be visually inspected with assistance of the front side led 113 next the telephone line tester 100 may be approached and connected with its frontal contact pins 114 to the to be tested connector due to the front side led 113 unobstructed illumination of the to be.