Monster MotorsportAH Fabrications
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  1. #1
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    Installing sub - any help!?

    Installing a sub into my Audi A3. Is there any spare gromets in the bulkhead or do I have to drill for the power-cable to connect to the battery? Was it easy for you guys??

    Cheers!!

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  3. #2
    G60DAN's Avatar
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    There is a spare grommet next to the pollen filter. You can run the cable up through the black plastic trunking that runs from the battery right up to the pollen filter.

  4. #3
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    So i do not need to drill into the bulkhead at all no? Is there anyway to earth it in the back? Because otherwise I'll have to drill?

  5. #4
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    Hi, When i did mine i didnt have to drill anything. There is a rubber gromet on the right of the firewall if you are looking into the bay from the front of the car. if you can get a screwdriver through ( it is quite hard ), then your half way there. i managed to get a 12mm power cable through it.

    it ends up in the passenger foot well, if you look there you will see the rubber gromet surrounding a wiring block iifc. Thats what i did, it may work for you

    As for grounding, in the boot there is that flap on the left hand side wall - ( where the bose sub goes and the cd changer ). I grounded mine to a bolt in there that screwed into the rear quarter metal. I never got power surges or cuts, and just ran the cable out the flappy door bit, it still closed over it.

    Hope this helps in some way

  6. #5
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    perfect cheers 'Doby Tray' I did all the above perfectly, going to do the boot now to see if it's ok, will post!

  7. #6
    rhubarb4's Avatar
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    another good earthing point is the seatbelt buckle bolt under the rear seat, you can have a decent earth there all hidden too.
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  8. #7
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    Thanks guys going to finish off the boot in the am and take what u both said, any other?

 

 

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