By: IIT
The IIT 16687 7 Blade & 4 Pin Tester is a top-of-the-line circuit tester from IIT. It offers superior build quality and customer support, making it easy to use and highly reliable for overall performance. With this product, you can be sure that your circuit testing needs are met with the utmost quality and reliability.
Shawn Mielke: Super easy and economical. Compact as well. Toss it in your glove box, center console or tool box. Great for troubleshooting electrical trailer wiring problems.
United States on Feb 15, 2023
Tony K.: A lot of reviews stated that this works in only one position, where the lights have to be viewed from the bottom of the tester, not so, a little dielectric grease on the female terminals helps it slide into place perfectly, very easy to read, I tested coth the 7 wire and 4 wire flat ends, works perfectly.
United States on Mar 31, 2022
Matthew Tyler Johnson: I sell trailers for a living and every time I hook up a new trailer for a customer, I want to make sure all the lights work before they drive away. Every so often the lights will not work, so I use this immediately to determine if the problem is in the customer's vehicle first. Works great! My only wish is that the LED indicators were on both sides due to some trucks having the plug upside down.
United States on Oct 21, 2021
Eddie J D: Works great for the source vehicle. Lets you know if the female/source side of the wiring is good. This will not let you know if the wiring on the trailer has issues. Lights are easy to see and makes testing much easier than trying to hold the spring loaded cover and holding the probes on a voltmeter.
United States on Sep 03, 2021
Camper: The lights are on the wrong side, you have to get on your knees and look up to check lights to see if connections are working
Canada on May 23, 2021
| 7-Blade and 4-Pin Electrical Tester by IIT 16687 | Mini Coil Cord Circuit Tester - OTC 3633 | Klein Tools RT210 Receptacle Tester - Test GFCI & Standard North American AC Electrical Outlets | |
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| B2B Rating |
81
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98
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97
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| Sale off | $2 OFF | $2 OFF | |
| Total Reviews | 37 reviews | 164 reviews | 224 reviews |
| Item Dimensions LxWxH | 13.5 x 5.5 x 16.5 inches | 2.85 x 8.55 x 1.7 inches | |
| Manufacturer | IIT | No | Klein Tools |
| Item model number | 16687 | 3633 | RT210 |
| Best Sellers Rank | #193,275 in Tools & Home Improvement #171 in Circuit Testers | #313,516 in Tools & Home Improvement #242 in Circuit Testers | #10 in Circuit Testers |
| Batteries Included? | No | ||
| Brand | IIT | OTC | |
| ASIN | B008L2WFMU | B003YNHVQQ | B01AKX8L0M |
| Included Components | Tester | ||
| Power Source | Battery Powered | Corded Electric | |
| Item Package Quantity | 1 | ||
| Measurement System | Metric | ||
| Part Number | 16687 | 3633 | |
| Batteries Required? | No | ||
| Product Dimensions | 13.5 x 5.5 x 16.5 inches | 2.85 x 8.55 x 1.7 inches | 5.3 x 3.8 x 1.5 inches; 1.9 Ounces |
| Style | Modern | Modern | |
| Customer Reviews | 4.6/5 stars of 794 ratings | 4.8/5 stars of 932 ratings | 4.8/5 stars of 7,922 ratings |
| Item Weight | 3.2 ounces | 1 Grams | |
| Date First Available | July 13, 2012 | November 28, 2008 | January 14, 2016 |
United States on Jun 23, 2023