A must have for diagnosing electrical issues! Puts a .5A load on the circuit when the button is pressed so you can see if the circuit has high resistance and drops voltage when under load like when they are badly corroded or you have a bad spot in a wire. When that happens it shows 12v until a load is introduced and then it will drop way down under 10v etc.

First I discovered this tool accidentally. I read Mr. Sullivan's book a few years back on circuit testing and trouble shooting first and had a good grasp on the concepts before I bought the other tool that has the name power in it. Very good tool. But when you understand truly what voltage drop does for you, and what ghost voltage vs no voltage means, you can zip through circuit testing. Some argue it does not add enough load for every circuit...But only a few of the largest cables carrying the most current will theoretically require more load than these leads can provide. There is a lot of strange hate of this product...it is really unlike anything I am familiar with. They are just multimeter leads with an added feature, no need to get dramatic.

GREAT Daniel Sullivan KNEW WHAT HE WAS DOING WHEN HE MADE THIS PRODUCT IT HAS HELPED ME TREMENDOUSLY OVER THE YEARS 10/10

You are looking at the Most Effective Technique Available for Diagnosing 12/24v DC Electrical.To check the wiring from the connector on DCV with Multimeter:Short to Ground: 0.00V, no Ghost Voltage When Shaking Test Leads.Open: Random Voltage/Ghost Voltage when Shaking Test Leads.Connection Issue: Press the LoadPro Button which will pull a .5amp Draw on the circuit. You should see a .3/negligible Voltage Drop and for the most part Battery Voltage should stay at 12v/24v.If there's a huge Voltage Drop, or small but still unreasonable, Wiring/Connection issue. or - Side for Wiring or Connection issue?: You Simply take the '-' Test Lead out of the connector you were testing and hook it to another/common ground. Hit the Load Pro button again: Voltage Drop Still Means the problem is in the '' Wire. No Voltage Drop Means the Problem is in the Negative.WILL SAVE YOU AND YOUR JOB MONEY:First time I used it I was literally about to order a new $1,000/- AC Compressor because the Clutch Went out and the Boss just wanted the whole new compressor because it was old anyway, bench tested the AC Compressor and the Clutch Engaged, New it was in the Wiring, but where?I decided to try the Load Pro on the AC Clutch Circuit and Found that when I pressed the Load Pro the 24v Went to 1.0V(Spec. for that AC Clutch needs to maintain 16V Minimum Under Load to engage.) The Load Pro(used properly per instructions) told me it was on the negative side and sure enough, found issue in the wiring that kept blowing fuse. This was all while people were telling me the issue couldn't be on the negative side,Load Pro ruled out Guess Work and I solved the issue.I love my Power Probe IV and Test Light but Dan Sullivan finally won me over. Cuts Electrical Diag. in half, helps prevent ordering parts. Woks well in conjunction with other tools.

This was recommended to me by a colleague. It works well. Diagnosed a bad wire in less than 15 minutes from being given the job. The voltage drop test is one of the more important ones. This tool makes it effortless

Fantastic product. Previous to being led towards this product by Cummins technical support I was using a high beam light bulb, the problem with that is the resistance can vary with temperature. This doesn't do that and gives consistent readings with less connections.

If your are a tech and don't have one of these, you are doing life wrong. Voltage drop testing is where it is at, and this does the trick perfectly. Watch youtube videos on it if you have doubts.

A must have in your diagnostic arsenal! It has save me a lot of time and money in diagnosing automotive issues!

I use this load pro alot , I don't know how I work with out it . Have a Bless Day

An absolute game changer when diagnosing electrical issues, far easier to hook up to a circuit than a makeshift load testing device, highly recommend

Excellent product. Excellent seller. Will do business again

Excellent very professional.

LoadPro test leads are the best test leads ever made. I've had them now for 3 years and they literally make diagnosing electrical problems super easy with the load function.

I use it daily works every time

A must for any type of tech to be able to test a load on a component

This is a must have for any technician or mechanic 100 worth it

Great feature To get your meter to give good readings quickly

Must have for any technician. Very easy and simple to use.

Havnt used yet but is EXTREMLY good quality. Impressed! Hats off to Dan S.

I use it often. Works just like it says