Re: Cub with Voltage to lights but they won't work!!!!!!

Posted by John T on May 17, 2009 at 07:41:58 from (66.244.97.31):

In Reply to: Cub with Voltage to lights but they won't work!!!!!! posted by Paul Durbin on May 16, 2009 at 20:44:25:

I agree with Jimbos good assessment. Regardless if theres an extermely high poor/resistive/corroded connection somewhere in the voltage supply circuit (from hot ungrounded battery post) a good voltmeter (an "ideal" one has infinite resistance) will read near full battery voltage out on the end of the supply WHEN THERES NO LOAD ATTACHED.

HOWEVER if you place a load such as lights on that bad supply circuit then theres a current path to ground and current throught that high resistive poor corroded connection causes an IR voltage drop so the lights arent left with much.......However if theres a high resistance short or load the current should be limited (E/R) and the batteries voltage shouldnt drop much... Its when you have a low resistance high current draw the batetry voltage can drop as its NOT an ideal unlimited energy supply.

John T

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