FIX YOUR TRAILER LIGHTS (3) - How to use a multimeter

TO PURCHASE A MULTIMETER - amzn.to/3VmWcfM

Thanks dude! After sanding enamel all last night around my trailer's ground connections I used the multimeter today (with the help of this video) at the 4 pin connector and discovered that my ground cable had no continuity and had slid out of a connector. Re-connected all and reset the ground and now I'm good to go. Thanks brother!

Dave, Just found your site and I love it. Always a problem with trailer lights and I've always been in the dark until now. I have a multimeter but only ever used it to test battery voltage in my equipment. Looking forward to using it for continuity. I also bought a 7 way and 4 pin flat tester off Amazon tonight. I'll stop at this video and see if I can apply what I learned before moving on to your episode 4. Thanks again man, and I LOVE your intro music. Definitely suits the intro video.

Excellent video series...finally someone able to explain wiring in simple terms. Thanks!

Very helpful tutorial! Much appreciated and love the details. Saved me buying a trailer plug tester Thank you so much. God bless.

Great video and super easy to understand. Thanks Dave. My side markers are dim while all other lights work fine. I can’t wait to check the ground for continuity at the side markers on the boat trailer.

Thanks alot man. I had trouble with my boat trailer lights for years. And i watched one of your videos about getting a good ground and i tried it and finally all my lights are working like they should. Thanks again.

Great lesson. You got my trailer back on the road. Thanks

Again, as always, a quality video! Thank You Captain Carpman

You are very knowledgeable and it makes sense.. I don't know where to begin to bringing my trailer up to code and safety.

You were very helpful on how to check and to understand how the wiring and the whole system works, THANK YOU! You got a new subscriber!

Great video. Plain english on what ohms you're looking for to have continuity and as you put it, a good conductor of electricity. This gets you started. Thanks.

Excellent Videos, finally someone speaking the way I think. Love the white board. Draw me a picture and I can learn well. Thank you         Ken

Excellent down to earth explanation! Thanks!

Thanks for your help, its a very good tutorial!

Great series of videos! Thanks!

Hi Dave, just at the end of part three......I'm finding your explanation is brilliant.......and I've always been frustrated with the use of a multi-meter......but you made it totally clear to me how to use it now thank you for that .......I would request one thing from you if at all possible for the series to be made in a way better quality of visual viewing it's a little fuzzy...........I know it's a lot of hard work.......but you truly have a great system with these YouTube vid's..........I'm a little hard of hearing but you are great and I didn't even need to turn my volume to max so thank you for that too....cheers mate.

My left side lights work some times. After watching your videos I’m assuming it’s not grounded correctly since it does work occasionally. I bought a whole light kit but now im thinking because the trailer has been heavily painted that I could just run a white wire from the breaks to the side light back to the plug and fix this whole things for $5. Also you’re awesome. Will update with success or failure. 😂

Thanks for the videos. Am troubleshooting my trailer now. At 8:07 when you do the zoomed inserts, the image is so grainy it's hard to see what you're demonstrating. Would prefer you get the camera & subject closer for those examples. Also, you are using the battery to demonstrate the 12 volts going through the wiring harness but on a vehicle would you have to have the key in the ignition or truck turned on to get the same flow? Thanks again.

Good video. A test light can also be used to troubleshoot wiring problems.