Question about 12V sockets not working
I have two 12v plug in sockets on the dash of my Dutch Star and are only reading 11.1 Volts on my Volt meter. They will not run my brake monitor or TPMS monitor. My 4ea 6 volt coach batteries read 6.6...
Forum Discussion
lanerd wrote:dougrainer wrote:
=or partially blown fuse. Doug
Really? A "partially" blown fuse??? With all due respect, how is that even possible?
Snomas...try attaching a separate piece of wire to the ground side of the 12v socket and ground it to the metal frame somewhere. Bet you will read the same or a fraction less that what the batteries read.
Good luck
Ron
Don't know "how" it happens. But I have seen it numerous times. The tungsten in the fuse "melts" but there is a charred sliver left and is enough to cause a voltmeter to read less than the supply voltage. When I get that reading, I then check the voltage on both sides of the fuse. I find that on the HOT side of the fuse I get the normal 12.8 to 13.6 volts and then that less than 12 on the "cold" side of the fuse. Doug
