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Windscreen Duct HJ-HZ
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TonyMax Offline
#1 Posted : Thursday, 10 April 2025 2:43:53 PM(UTC)
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I need one of these ducts for rego to get air onto my windscreen, but I looked under the dash of 4 or 5 cars at the wreckers yesterday and they all seemed to be slightly different where they join into the rest of the system.

Is this something Holden did just to mess with us?



The rest of my system is all solid with no flex piping, see other photo.
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Dr Terry Offline
#2 Posted : Thursday, 10 April 2025 4:41:36 PM(UTC)
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does your car have factory a/cond ? They're different. Also there is another version with 2 flexible tubes going to the centre face vents.

Dr Terry
If at first you don't succeed, just call it Version 1.0
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TonyMax Offline
#3 Posted : Thursday, 10 April 2025 6:42:08 PM(UTC)
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I don't have or want AC. I just need to be able to get air to blow on the screen to pass rego.
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greenhj Offline
#4 Posted : Friday, 11 April 2025 7:37:01 AM(UTC)
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Does it need to be warm air to pass inspection?

Is the original fan/heater core assembly still in the car?
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TonyMax Offline
#5 Posted : Friday, 11 April 2025 12:20:55 PM(UTC)
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It doesn't need to be warm which allows me to do heater plumbing at a later date. There's a heater core in the car.

I believe I need the y shaped windscreen duct that fits on the right hand flap/opening in my heater box:

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wbute Offline
#6 Posted : Saturday, 12 April 2025 10:48:38 AM(UTC)
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As Dr Terry said, there are at least three, factory AC, cars with no centre face level vents and cars with centre face level vents.
What is your car fitted with?
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