Power wire through firewall for amp install

Discussion in 'Prime Audio, Electronics, and Infotainment' started by G23, Jun 26, 2018.

  1. G23

    G23 Junior Member

    Joined:
    Apr 16, 2013
    27
    3
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    Trying to figure out the best way to run power wire through the firewall to install an amp. Probably 8 gauge wire but possibly 4 gauge. Read in the 4th gen forum that there is giant grommet that can be used. I was assuming the chassis of the 4th gen and prime was the same. Maybe not? Anyways, I've attached a photo of what I believe to be the grommet. If that is the grommet, how would you get the wire through? concerned about poking through there and damaging something underneath. Also, anyone have a photo of an install that shows the wire route through the engine compartment to the battery terminal? Thanks for any info.
     

    Attached Files:

  2. 2015BlizzardPriusFour

    2015BlizzardPriusFour Active Member

    Joined:
    May 25, 2015
    171
    141
    0
    Location:
    Central Valley CA
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
  3. Heiyu92

    Heiyu92 New Member

    Joined:
    Dec 25, 2017
    7
    11
    22
    Location:
    Seal Beach
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Advanced
    Yes you can run the power wire thru that. Just pop it off and run the wire thru. If you shine a light you should see it come thru the firewall
     
  4. Depe

    Depe Junior Member

    Joined:
    Oct 2, 2012
    33
    23
    0
    Location:
    Tennessee
    Vehicle:
    2017 Prius
    Model:
    Four Touring
    I drilled a small how to run the wire through. Then I sealed it with a small grommet and rtv. I initially tried to use that grommet but it was giving me issues and i didnt want water to potentially leak onto the cabin harness.
     
  5. G23

    G23 Junior Member

    Joined:
    Apr 16, 2013
    27
    3
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    @ Depe. Where on the firewall did you drill the hole? Drilled from the inside I assume? What type of issues were you having with the grommet?
    @Heiyu92. What do you do after you run the wire through, you wouldn't be able to pop in back on with a 4 gauge wire running through it. Cut a hole in the grommet, where the nub is maybe?
     
  6. muleman

    muleman Junior Member

    Joined:
    Jan 10, 2018
    56
    48
    0
    Location:
    rochester ny
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Do you have a pic of where you drilled the fire wall?
     
Loading...