Not sure what the housing question refers to but the entire headlight is factory original, have not installed any LED's, bulbs are still 3157A
Thank you very much for that information, this gives me a lot to go on and I really appreciate it, I’ll keep you updated with what I find
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A huge thank you for this diagram/flow chart, I found that the harness was not getting good contact with that driver pin on the TIPM, slightly tweaked that pin and all is good again, saved me a lot of money, thank you again 6.7L_MegaCab!!