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134 Posts
I kept the stock hella wiring harness with the 100w bulbs. The longest I have run them is about 1 1/2 hours while dimming for very minimal oncomming traffic. A friend of mine has the same setup ( 85w bulbs ) and when he had his on for 3 hours straight he did melt the red wire in the hella wire harness and had to run a heavier gauge.