3420 INDICATOR LIGHTS MAY BE CONVERTED TO 12VDC SOFT WHITE LEDS IMPORTANT!: SELECT INDICTOR LIGHT HAS A 150 OHM RESISTOR ACROSS A1J2B04 (-SELECT) AND A1J2D08 (GND) TO REDUCE OFF TO BRIGHT TRANSITION WITH INCANDESCENT BULB, THIS DOES NOT WORK WITH LED (KEEPS LED BRIGHT) AND THE LEAD TO A1J2B04 MUST BE DISCONNECTED (LEAVE RESISTOR IN PLACE AND MAKE SURE THE LEAD CANNOT CONTACT ANY PINS) USE OF AN LED RESULTS IN A STRONG STROBE EFFECT IN THE EVENT OF RAPID SELECT/DESELECT (IE: USING THE FIELD TESTER START/STOP FUNCTION) DUE TO THE SIGNIFICANTLY DECREASED ON/OFF TRANSITION TIME AND MAY CAUSE DISCOMFORT AND/OR SEIZURES TO SOLVE THIS I ADDED A 47MF CAPACITOR AND 470 OHM RESISTOR R=FACTORY RESISTOR PROVIDED WITH 12V SOFT WHITE LEDS D=LED (DIODE) |=WIRE + 1 2 V | R |\ D 4 | 7 4 M 7 F 0 | |/ - S E L E C T