Glensts Posted August 24, 2021 Share Posted August 24, 2021 (edited) Our 2013 and 2016 Mack CHU have bulbs for headlights, 9004. When we update them to LED they will flash on and off inconsistently due to the module not getting enough current. Found this on Amazon.ca that goes in series that fixes the problem and draws extra current https://www.amazon.ca/gp/product/B081Q6W3LR/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 I'm not sure how to do the picture of it or if the link will work right from canada Edited August 24, 2021 by Glensts Quote Link to comment https://www.bigmacktrucks.com/topic/67824-mack-chu-daytime-running-lights-relay/ Share on other sites More sharing options...
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