Prius wiring harness Colors WHYYYYY

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Knightrider, May 2, 2019.

  1. Knightrider

    Knightrider Member

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    II
    Starting to chase my cars harness for the reason I have no dome-radio-smart key-dash lighting vsc light on.

    Red out of Dome fuse harness underhood box to:

    It appears for some reason Toyota changes colors many many times in between connections - sometimes 3-4 times on same circuit.

    I am mainly wanting the radio---- If not I Will wire around the existing 12v/igntion harness setup -

    In the online wiring diagram pages 67-72 are missing -
    Aside from replacing a Body ECU to see if it is the issue.

    Any help is appreciated.

    05 Touring - Base MFD and Radio- no external amp.
     
    #1 Knightrider, May 2, 2019
  2. MickyMatter

    MickyMatter Active Member

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    Have a look in the very end of this:

    You'll find all the wiring diagrams.

    SM-G950F ?
     
    #2 MickyMatter, May 3, 2019
  3. edthefox5

    edthefox5 Senior Member

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    Are you asking where is the dome fuse? The dome fuse is usually the first to blow if you reverse polarity a 12 volt battery jump start.
     
    #3 edthefox5, May 3, 2019
  4. Knightrider

    Knightrider Member

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    II
    No-
    The three likely failed fuses have been checked. Replaced to avoid any reason to think they've failed.
    Sockets were checked.
    The two in the driver foot area are good.
    The socket underhood is another story.

    I have no power across the fuse. But when going from either leg of the fuse block to a ground.....I can get 12v....So I am guessing my fault lies within the next junction block / a broken wire or failed module.

    I was hoping there was a relay that would be simple to swap out---

    I am tired of no radio/dome.
    Keyless entry isn't a huge factor.
     
    #4 Knightrider, May 3, 2019
  5. Knightrider

    Knightrider Member

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    Thank you sir- I will give this a deep read.
     
    #5 Knightrider, May 3, 2019
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