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not chargeing ligts on Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Truck Repair>> Truck Repair Advice trucker67 New User Dec 8, 2009, 7:47 PM Post #1 of 4 (2504 views) not chargeing ligts on Sign In i own an 84 chevy c10 pickup.and you can drive the truck anywhere long as you dont turn on the lights.replaced the alternator and battery and it is still not chargeing with the lights on ratrace2 User Dec 8, 2009, 7:52 PM Post #2 of 4 (2499 views) Re: not chargeing ligts on Sign In New alternator could be bad. "new means nothing nowdays". put a meter on it. Check your ground cable to the truck, also. check for "fraid" battery cables. 1984: 30 year old copper wire loses it's ability to conduct electricity. trucker67 New User Dec 9, 2009, 8:26 AM Post #3 of 4 (2488 views) Re: not chargeing ligts on Sign In thanks for the help but i have another problem is a 65amp alternator enough for this truck Loren Champlain Sr Veteran / Moderator Dec 9, 2009, 6:16 PM Post #4 of 4 (2484 views) Re: not chargeing ligts on Sign In trucker; Agree with Ratrace; What kind of voltage are you seeing at idle and at 2500rpm? The voltage regulator is built into the alternator. A 65A alternator should be sufficient. Did you replace the battery and alternator for this same problem? Most people will have access to a voltmeter, but few to an ampmeter. If the battery is low, the alternator will pump out amperage to try and recharge. As it is doing this, the voltage will be lower than normal. Once the battery is fully charged (assuming it is good), the amp output will lower and the voltage come back into specs. 13.6-14.6V. Before you get started, take a voltage reading at the battery. Then, start the engine and note the voltage readings. Repost these readings, if you will. Also, make sure that you have at least 12V to the power terminal on the alternator. Loren SW Washington (This post was edited by Loren Champlain Sr on Dec 9, 2009, 6:18 PM)   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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