14. BATTERY/CHARGING SYSTEM/ A.C. GENERATOR Mongoose/KXR 90/50 REGULATOR/RECTIFIER MAIN HARNESS CIRCUIT Regulator/Rectifier INSPECTION Remove the front covers. ( 2-2) Remove the regulator/rectifier 4P coupler and check for continuity between the wire harness terminals according to the following : Item (Wire Color) Judgment Between battery (red) Battery has and engine ground voltage Between ground (green) Continuity exists and engine ground Between lighting wire (yellow) and engine ground (Remove the A.C. generator resistor coupler and auto stator has bystarter coupler and resistance turn the lighting switch OFF for inspection) Between charging coil A.C. generator (white) and engine stator has ground resistance REGULATOR/RECTIFIER INSPECTION White Red If the main harness terminals are normal, check the regulator/rectifier coupler for loose connection and measure the resistances between the regulator/rectifier terminals. · Do not touch the tester probes with your finger because human body has resistance. · Use the following specified testers for accurate testing. Use of an improper Green Yellow tester in an improper range may give false readings. Testing instrument YF-3501 · If the dry battery in the tester is weak, Probe White Yellow Red Green Probe(-) the readings will be incorrect. In this case, check the dry battery. White Yellow 10.75M Red 6.62M Replace the regulator/rectifier if the Green 11.17M readings are not within the specifications in the table. 14-7