Excellent question. The Tyco 30 Amp relays we sell are identical in design to the Bosch branded 30 Amp relays that we have used for over twenty years! [Tyco acquired the Bosch relay business.] In that time, we have used thousands of them and have never seen a single failure when the relay is installed correctly. The Tyco 40 Amp relays are built equally as well. In addition, we offer the industry standard in waterproof automotive relays – the Hella 40 Amp. Our selection of Relays is without question the finest available for automotive use. Contrast this to the cheap relays that we’ve removed hundreds of and replaced with better units to solve problems.
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