Description: When S6 is depressed and Q3 detects positive (high) on the input then the lamp indictor lights up indicating an open in one or more the failure sensors. When negative (zero volts) meets up at the bottom of R6, the input to Q3 becomes zero volts, and therefore, Q3 does not pass current and the indicator lamp does not light.

Q3 --- PNP TRANSISTOR

F1 --- FUSE 20 AMP

S6 --- SWITCH, NORMALLY OFF

L1-L5 --- WIRE LOOPED AROUND A GLASS ENCASED MAGNETIC REED.

L6-L10 --- 32 CP LIGHT BULBS