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Thread: Firewall gromets for an amp cable

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    Guest jon200's Avatar
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    Firewall gromets for an amp cable

    Ive got a million and one things coming into or out of the cabin. I need to find another gromet if there is one to feed the wire through. Is there a diagram of the firewall that might show any additional gromets?

    The one by the bmc is taken already.


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  2. #2
    Now with 400bhp....
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    Just drill one. Plenty of room around the BMC for another I'd of thought.
    1998 Nissan 200sx s14a , 2000 std 5 speed with nismo supercoppermix clutch bn6 Sapphire Blue

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    Guest immy21's Avatar
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    Don't know about diagrams, but there is another blank grommet in the wheel well near/under the triangle hole by the passenger turret.
    Remove the arch liner that's attached to the passenger side skirt to get access.

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    There's a grommet already in the drivers footwell up near the pedal box that has space. I run my power cable to the relay box from my rear mounted battery through it.

  5. #5
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    This is what I did. Got them from RS Components. I have a few spare. Give me your address and I'll post them FOC.
    I did run a drill bit down then very carefully to make them wider, as the cable has a soft sleeve which it crimp
    to there was no need for the rubber sleeve. But depends how thick your cables are. I'm sure this is 13mm diameter
    Welding earth wire.
    Last edited by Messydan; 30-07-2015 at 10:31.

  6. #6
    Guest jon200's Avatar
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    I dont think i have the gromet on the driver side for the main loom. It seems to go across the the passenger side. I dont really want to drill a new hole but if i do then i can get some gromets from work.. Immy is it on the door hinge piller?


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    Guest jon200's Avatar
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    Yes i do have the grommet on the driver side, sorted now. Just need the amp from the loft but the kids are in bed.


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    Guest immy21's Avatar
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    No not near the hinge, the one I'm taking about is an unused grommet, just were the yellow PZero is, need to remove the arch to get to it. Once in poke a screwdriver or loads of whatever wire your feeding though it, on the other side is carpet/insulation. To get access remove the ECU and reach up, you will feel the wire you fed through without too much difficulty but will be out of sight.

    You get access into the engine bay just below the wiper motor.

    Lets call this the 'secondary' hole






    Next up which most are aware of but I'l mention it for whoever isn't. 'Primary' hole, another unused grommet with easy access at both engine and interior footwell, just by the clutch master cylinder.





    Then the big one feeding the main loom through, I prefer not to poke around with this in case I stab a wire but did feed my chunky power cable through it for the battery relocation on my old s14a.

    Access behind drivers arch, see it through the triangle on drivers side.




  9. #9
    Guest jon200's Avatar
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    I see. I already have a loom through both of the larger holes either side anyway?


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  10. #10
    Guest immy21's Avatar
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    Quote Originally Posted by jon200 View Post
    I see. I already have a loom through both of the larger holes either side anyway?


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    So both the smaller holes used up too?

  11. #11
    Guest jon200's Avatar
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    Both? Ive found the one by the clutch MS but no more. The one by the windscreen wiper motor and the one in the driver arch have the looms through them. Ive stuck it through the driver arch one for now.


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  12. #12
    Guest immy21's Avatar
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    Quote Originally Posted by jon200 View Post
    Both?
    Yes, take the passenger arch liner off and you will see it.

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