Question about 1993 Jeep Grand Cherokee
Hi there. I had the same problem with my jeep and finally found out that I was turning the ignition key too far and it was actually keeping radio etc running behind the scenes. I think it was draining about 7amps. My auto electrician says that the lights are the same where if you turn the dimmer hard left until it clicks to get maximum brightness this is draining 9amps without you realising - except for a flat battery of course. Hope this helps.
Posted on Sep 10, 2010
If u had ur stereo recently put in is that but the only way is if u have notice any thing from a light trunk door lock dash flickering etc thats u short a live wire
Posted on Aug 31, 2010
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Posted on Jan 02, 2017
to find the draw Switch off all electrical loads such as lights, radio equipment, auxiliary equipment and make sure the vehicle ignition system is turned off. Remove all ground paths from the negative battery terminals. Connect a jumper lead from theground cable to the negative battery terminalYou are now feeding the electrical current requirements of the entire vehicle through the jumper lead. Do not activate any other electrical equipment while the jumper lead is supplying the vehicle current. Wait five minutes to allow all electrical devices to shut down and go to standby mode. While waiting for the vehicle electronics to go to sleep, set up a digital ammeter, such as the Fluke 88to read amps (automatic scale) and make sure the test leads are plugged in to the correct connectors to read amps (COM and A). Connect the COM ammeter lead to the negative battery stud and the positive lead to the connected ground cable After five minutes with the jumper and the ammeter connected in parallel, remove the jumper lead from the three connected cables to the negative battery stud as shown in Figure 3. The vehicles entire current requirements (parasitic load) will now be going through the ammeter. Read the current flow in milliamps. Remember that 1000 milliamps is equal to 1 amp. If the readout has ma after the reading youre measuring milliamps, if the readout has A after the reading youre measuring amps. If at any time during this process the current flow is interrupted (a connector falls off) you must begin again with the jumper connected for five minutes before attempting to remove it leaving the ammeter passing all current and measuring the parasitic load, Under normal conditions, while parked, a vehicle equipped with a standard electronics package should be drawing less than 50 milliamps. If the parasitic load is more than this the vehicles battery storage life will be shortened. If excessive current draw is observed, remove the fuses one at a time until a significant current drop is noted. Do not pull and reinstall the fuses as this may wake up some circuits and cause excessive surge current through the meter. Make note of fuse locations as they are pulled so they can be reinstalled in the proper fuse panel location when testing is complete. When high current draw devices are isolated consider relocating their power feed from a power source that is inactive when the ignition switch is turned to OFF. Sorry So long but hope it helps
Posted on Mar 06, 2010
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