Originally Posted by Capt_TJM

My high school shop teacher showed me the voltage drop technique on the old style glass BUSS fuses about 40 years ago. He had this big phenolic resin Westinghouse analog needle amp meter with ***** and multiple scales. My first intro to Ohms Law and the basics that still hold true today.
I am stumped by a steady 0.180 Amp drain on a 2005 Crossfire. A 1 year old battery is dying in less than 2 weeks, not totally dead but that awful clicking only sound when trying to start. I did the voltage drop method across all fuses and found that fuse 9, dome light, anti-theft module fuse would drop the steady drain to .130 or so. I'm assuming that is the NIL of 0.050 that should be there. I've checked the 50 and 200 Amp fuses, all good. Tomorrow I'll check your number 11 step, the alternator big red and hope that does it. ** I put in a re-manned alternator about 2 years and 7,000 miles ago. I used low price as my choice, I guess I got what I paid for. ** I hooked up a NAPA newer battery tender I've used on other vehicles but when switched to on, the "reversed polarity" light comes on, only on the Crossfire. I'm hoping a bad diode is the culprit and a quality alternator will solve the problem. If not, step 12, vehicle was stolen! Your posts have saved me from going down some rabbit holes. Thank you.