Using fuse box spare fuse

BTPO1 wrote:

RvBill3 wrote:

westend wrote:
Do you have a test light or a meter?
Edit: you can also make your own tester using two wires and a 12V bulb or any 12V device. You could even use your new monitor. Attach one wire lead into each of the opposing blade sockets. With the two stripped wires from the fuse location held in your hand, touch the (-) and (+) to the contacts of the device or bulb you are using to test.

IMO, anyone either working on vehicle or RV electrical systems should have a meter. They are cheap enough, now, that there is no excuse not to have one. Harbor Freight sells a variety of them, the cheapest either being $4 or free when offered as a promotion..

Not sure I am understanding this correctly, so please excuse if I have it wrong. Are you suggesting that both test wires be hooked to either side of the fuse socket? That would be 2 positive feeds. One of the test wires should be connected to ground (-) and one to the fuse socket (+). Using the backup monitor as the tester could result in damage to it. I agree 100% to go to Harbor Frieght or big box hardware store and buy a cheap meter.

x2, lost me too.

OMG, I'm sorry, I was rewriting that original post and got that all mixed up. I hope it didn't cause you any damage. I've edited the post to be correct, now. I usually read through my posts a second time to make sure they're accurate but slipped up on this one. Again, sorry. Glad there were a couple of good minds on here that caught it. Thanks, guys.:o