Reviewer Jaime Lazarus gives an even closer look into his review of the Round Terminal Set and BackProbe Lead Set along with pictures for more in-depth knowledge on the Curien Round Terminal Pin Kit and BackProbe Lead Set

Product packaging

It’s easy to identify what’s inside the package labeled “BPLS101” because there’s a picture and a description of its contents right on the label. The reverse side is see-through, making it obvious what’s inside as well.

Inside of the plastic bag labeled “BackProbe Lead Set” is the 10’ long current carrying lead and an envelope containing six 2” long chrome-coated steel T-pins.

The box labeled Round Terminal Set doesn’t have any depiction of its contents, nor has it a see-through cover, so one must have prior knowledge of its contents when considering implementing them.

Inside the Round Terminal Set box are five each of the male and female round wire terminal adapters, a female flat (or spade) wire terminal adapter, a handy 3” long electrically conductive flexible extender (that is an adapter holder), and lastly, a foam insert (or foam peg pad) in which all of these are positioned for easy identification.

The Round Terminal Set’s five sizes allow a user to attach to terminals that are from 1.5mm to 4.0mm diameters in .5mm increments. Each adapter in the set is solid brass and gold-plated for the best electrical conductivity.

Product application(s)

Figure 1 depicts how the extension may be attached to a standard 4mm banana meter lead, then attached to either a male or a female terminal adapter. Figure 2 shows the female spade terminal adapter installed on a component being tested.

Figure 3 shows a DVOM connection using the BackProbe Lead Set along with one T-pin back probing a terminal of a wire harness. Figure 4 shows a DVOM set up to test a wire harness using one of the front probe adapters attached to the extension.

Because the Round Terminal Set is made of solid brass, it’s possible it’s strong enough to be used to safely straighten bent connector terminals without damaging them as might happen with pliers.

Product quality

Figure 5 is a close-up of the wire-to-alligator clip assembly. I found the manufacturing superior to average as the actual conductor was wound through an opening in the alligator clip, then soldered well enough that it flowed through the opening. This method of construction provides a better connection, meaning fewer “bad readings” throughout the life of the product.

The silicone insulation on the 10’ long lead is easily cleaned and is mostly tangle-free. The strain relief is adequate on the meter end (where it’s pushed into a DVOM or oscilloscope). Also, the 4mm male banana plug fits the most common DVOM connections without the use of an adapter.

The only part of this lead I did not care for is the soldered joint on the alligator clip. It becomes the “weak link” because the alligator clip is not crimped to the insulation. After a time, the wire will break where it is soldered, which is relatively easy to fix in the field, but longevity could be enhanced with a simple crimp on the end of the alligator clip in the area where the wire enters the clip.

The T-pins are high quality and have a large diameter, which makes them especially resistant to bending.

Check out Lazarus’s review of the Curien Round Terminal Set and BackProbe Lead Set here.