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Thread: DIY- 9006 to H4 conversion

  1. #1
    2,000 rpm - light wheelspin, no bog here! ctrench's Avatar
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    DIY- 9006 to H4 conversion

    So me being a cheap ass and the fact that i like doing things myself led me to this project. i had access to free 9006 buld HID's and i decided to convert them to my H4 housings and wiring... it was much easier than expected. I personally am going to be doing a custom low-pro set-up soon so im not worrying about high beams at the moment but to all others... *WARNING* this modification does not allow the use of high beams!

    So to start off i cut off the original 2 prong plug for the 9006 HIDS to convert it to the 3 prong h4 bulb wiring


    Well obviously you can see that the bulbs are different and so are the mounting "circular pads" for the 9006 is much smaller


    To make them fit we must get rid of these tiny tack welds to remove the outer "ring" from the h4 bulb


    I used a small dremel with a cut off wheel to grind off the little welds and let the ring slide off


    And as you can see the 9006 bulb slides right onto the H4 mounting "ring" pretty tight but as security i used some epoxy (jb weld would work) to bind the bulb to the H4 ring


    Using a test light, i found out that the 3 wires on the H4 wiring includes the black (ground wire), red/black (low beam power) red/white (high beam power)


    (Refer to 1st pic) Splice the red power from HID box into red/black wire and then black wire on HID box to the ground wire then replace bulb into the back of the original housing


    Like always when you do a wiring mod... tuck your wires away!!!


    And enjoy the brightness!!!

  2. #2
    Individual-1 ☚ ☻ ☛ Agent☣Orange's Avatar
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    Very cool write up and great photos! Wish I could give positive rep still but a big thank you!

  3. #3
    2,000 rpm - light wheelspin, no bog here! jnshk's Avatar
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    Pretty creative/inventive solution, but what does the beam pattern look like?
    Active: 1991 Mazda Miata (B-Package), JRSC+MS3 [Daily/Project]
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    Hiatus: 1958 Volvo 444 Sport w/ Ford 2.9L EFI and drivetrain

  4. #4
    2,000 rpm - light wheelspin, no bog here! ctrench's Avatar
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    thanks guys... ill have pics up tonight, i have to adjust the light angles once it gets dark tonight

  5. #5
    2,000 rpm - light wheelspin, no bog here! ctrench's Avatar
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    Hes a pic of the lights a night... they still need some slight angle adjustment.

  6. #6
    2,000 rpm - light wheelspin, no bog here! jnshk's Avatar
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    :/ I think oncoming motorists and people with rearview mirrors are going to hate you.
    Active: 1991 Mazda Miata (B-Package), JRSC+MS3 [Daily/Project]
    Active: 1995 Mazda Miata (M-Edition) [Full Send Project]
    Hiatus: 1997 Mazda Miata (PEP) [Candidate for Lifted Miata?]
    Hiatus: 1958 Volvo 444 Sport w/ Ford 2.9L EFI and drivetrain

  7. #7
    2,000 rpm - light wheelspin, no bog here! ctrench's Avatar
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    now they will all know how i feel being low and every headlight is super bright!!

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