TSG—June 22, 2021✓ Verified purchase
I'm still pretty early on in my ownership of this relay, but initial results are great. It's powering a pair of radiator fans - it's WAY more amperage than they need, but I wanted to have a good safety margin rather than nearly max out a standard 30a or 40a relay. In an ideal world, Fastronix would supply the terminals and gasket and let me install my own wire, but I get that most people just wanna splice wires together, so whatever.... it's just a bit messier than I'd like. Yes, I could have bought the components elsewhere and built my own but I wanted it now, so.... Amazon! In my experience Fastronix supplies quality stuff and they stand behind their products, so yep, more of their components for me! Read more
MBaker—June 18, 2025✓ Verified purchase
Why did you pick this product vs others?: Direct Replacement relay, works great. Sealed nicely so weather will not get inside. Read more
Kevin Ringer—May 8, 2025✓ Verified purchase
QUALITY PART Read more
cat—March 12, 2026✓ Verified purchase
These terminals can be a challenge to crimp properly and they give you enough extras to cover for mistakes. Hint-Get a good ratcheting crimper with changeable dies and prebend the terminal flags. Practice on a scrap wire first too! Read more
Your Friend Michael—September 28, 2025✓ Verified purchase
Can’t figure out where it’s made, ai says USA. For some reason the product is not on Fastronix website, maybe site is old. So you are left with others testimonies and experiences which all I could find were good. I’m using it to control a TI/Walbro 450 walbro-450lph-fuel-pump-high-pressure-tia450-2-f90000274-universal-e85-ethanol Read more
Dave—March 31, 2020✓ Verified purchase
This is a nice piece. It looks nice, is well built and much better than some of the other off brand items available. There are detailed instructions and its quite a nice piece. I have no issues hiding this relay "in plain sight" versus others where i'd hide behind a body panel. Read more
Robert Couse-Baker—August 2, 2025✓ Verified purchase
Using as a horn relay on a truck. Bracket is nice. Read more
GearHead—September 16, 2020✓ Verified purchase
I used this relay to create a custom wiring harness for my '17 Jeep JKU. I wanted to add auxiliary reverse lights that utilized the OEM wiring. I didn't want to cut the OEM wiring, so I bought the Rugged Ridge 17275.01 trailer wiring harness to modify and adapt to my needs. Because I wanted the aux lights to turn on with the factory reverse lights, yet also have a manual activation switch that wouldn't interfere with the OEM reverse lights, I needed a quality relay. See photos for my custom wiring diagram. And because this relay would be tucked behind the rear fender, it would be semi-exposed to the environment. This Fastronix relay was the perfect solution. Pros: -Very high quality relay. -Included wired relay connector uses the standard 5-pin Bosch pinout. In a pinch, any 5-pin relay could be used in its place. -Connector wiring is high quality and durable. -Included diagram shows some basic wiring examples and options. Cons: -None! Read more
