Water pump not working on battery
What would cause the water pump to work on shore power but not on battery? Battery charged to 12:8 volts. Fuse good. Any suggestions are appreciated.
Forum Discussion
Are you saying the fuse is good because it visually looks good? Or did you put a volt meter on the fuse while it's plugged in?
If just a visual check you will need a meter to check to verify that there is 12 volts going in and out of the fuse.
At the fuse panel find good 12v positive and ground so you know your tests will be valid. Then leave the ground connected and move the positive lead to the water pump fuse and probe the back of the fuse while it is plugged into the panel and see if you have 12 volts. Probe both holes on the fuse and the meter should read the same. If you measure 12.63 volts on one hole you should also read 12.63 volts on the second hole.
If the readings are different replace the fuse. if both readings are zero you have no power going to the fuse.
If all fuses read zero find the reverse polarity fuses and check them.
If just a visual check you will need a meter to check to verify that there is 12 volts going in and out of the fuse.
At the fuse panel find good 12v positive and ground so you know your tests will be valid. Then leave the ground connected and move the positive lead to the water pump fuse and probe the back of the fuse while it is plugged into the panel and see if you have 12 volts. Probe both holes on the fuse and the meter should read the same. If you measure 12.63 volts on one hole you should also read 12.63 volts on the second hole.
If the readings are different replace the fuse. if both readings are zero you have no power going to the fuse.
If all fuses read zero find the reverse polarity fuses and check them.
