I recently purchased a pair of Zdatt H13 9008 LED headlights for my 08 Dodge Ram 3500. After they warm up 3-4 minutes they turn off and on repeatedly. What am I missing and how do I fix this problem?


  • Are they overheating, Is there sufficient cooling? Is the supply sufficient? – Solar Mike Nov 24 '18 at 19:30
  • i can hear the Fans working and when I touch the housing it isn't that hot yet. I installed 2 new batteries last week and a new alternator early summer – Chuck Nov 24 '18 at 19:34
  • I didnt drive it. It was dark when I installed them. – Chuck Nov 24 '18 at 19:36
  • Welcome to Motor Vehicle Maintenance & Repair! – Pᴀᴜʟsᴛᴇʀ2 Nov 24 '18 at 19:38
  • Did you have the engine running above idle, theses bulbs are sensitive to low voltage... They can flicker or not light if below 13V or so... – Solar Mike Nov 24 '18 at 19:54

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