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Discussion Starter #1
Wiring hook up for headlights and signals I have a western ultral mount 8.6 straight plow from a 2018 ram to my 2018 Silverado 2500hd plow works but headlights and signals park lights won’t switch over when plow connected any ideas?
 

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Does the plow function correctly otherwise? Do the truck lights work normal? Do the truck lights stay on or turn off ?Who did the install?
 

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Are you sure you disconnected the factory harness and plugged in the plow harness?

It may sound silly, but you wouldn't believe how common it is for people to either forget entirely or to plug the plow harness into itself
 

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Discussion Starter #6
This harness came off a 2018 ram and when the dealer removed it from ram they cut the lighting wires.
 

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Huh? How could you have installed that harness in the chevy? If you don't have the harnesses to connect to your chevy lights, how did you think that would work?

Nevermind - you need to buy part # 69818
 

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For the record, the reason that harness won't work on your Chevy is the Ram had a bundle of factory supplied wires that your harness connected to specifically for the snowplow. Your Chevy does not so the harness you need connects to your headlights on the truck
 
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