vinny933 Posted August 24, 2021 Share Posted August 24, 2021 R3 relay lights where blinking wipers going when I turned key on, pulled this relay under hood and it stopped everything works. Is this relay for a wire to the back of the truck for a trailer hookup it's a 2019 granite triaxle dump no trailer plug in the back Quote Link to comment https://www.bigmacktrucks.com/topic/67821-trailer-marker-lights-relay/ Share on other sites More sharing options...
vinny933 Posted August 24, 2021 Author Share Posted August 24, 2021 Well figured it out , it for trailer hookup plug 1 Quote Link to comment https://www.bigmacktrucks.com/topic/67821-trailer-marker-lights-relay/#findComment-478838 Share on other sites More sharing options...
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