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Originally Posted by striker_1818
There was a guy on another forum where his ballast went poop drawing 40 amps. He kept blowing his relay but then someone told him to hook it up directly to the oem female 9006 connector because he said "OMFG our cars are designed to withstand the current u dont need a relay you're dumb for the 1000000000000000000000000000000000000000000000th time u dont need it dont be dumb" and guess what? He fried his stock harness. Later after some testing his ballast was drawing 40amps.
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Sorry, this sounds like another urban legend, and is most likely not true. Here is why. Each headlight wiring leg circuit (left low beam, left high beam, etc.) is fused separately with a 10 amp fuse. In addition, the entire wiring circuit, is fused at 20 amps. If a Ballast does short out and goes into a high current draw mode, the leg fuse will blow long before the wires are damaged. In 99 out 100 ballast failures, the ballast simply stops working. In the rare case that it does short out, if it is properly fused, then the fuse will simply blow.
The stock wiring harness is in-fact superior to an add-on relay harness, because of redundant fusing, and the conservative way that each light is fused independently.
9 out of 10 times a reported foul-up is directly attributable to the person who modified their car incorrectly.