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  4. AC and washer delete, now no interior lights, power locks,hazards or 13button OBC

AC and washer delete, now no interior lights, power locks,hazards or 13button OBC

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  • Brian.B
    Brian.B
    Brian.
    wrote on last edited by
    #1

    Like the title says, ever since I deleted my AC, the windshield washer setup, and my right high beam (For more air flow to turbo stuff) My interior dome lights wont light up, hazards won't work, power locks don't work, any of them, my 13 button OBC doesn't show anything. I'm sure there is more. Car runs, windows go up down, power seats work etc. I just don't know what it is that's not working. Any idea's?

    instagram @howdoyoudrivethat

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    0
    • B
      B
      Boris3
      wrote on last edited by
      #2

      Check all your fuses?

      1990 325i racecar (ITS, former Spec E30); 2004 330i ZHP

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      • Brian.B
        Brian.B
        Brian.
        wrote on last edited by
        #3

        Was the first thing I did. They're all fine..

        instagram @howdoyoudrivethat

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        • B
          B
          B C
          wrote on last edited by
          #4

          I checked through the wiring diagrams for those components and they all share a common ground "G200" which is under the dash by the pedals.

          Reference: http://wedophones.com/Manuals/BMW/1986%20BMW%20528e%20-%20535i%20Electrical%20Troubleshooting%20Manual.pdf

          Posted Image

          Inspect/clean-up that ground point and use it to check for continuity with the ground wires on the harness for the components that aren't working. If they check out good then you know the wiring harness is good. Also check the resistance of the ground point with the negative terminal on the battery. If those items checkout good then there is a bad common +12V somewhere in the circuit.

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          • Brian.B
            Brian.B
            Brian.
            wrote on last edited by
            #5

            ^ thank you. I'll give that a try, although I didn't mess with that side, never know!

            instagram @howdoyoudrivethat

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            • Brian.B
              Brian.B
              Brian.
              wrote on last edited by
              #6

              It checks out good. Put My hood ground back on. Still nothing.

              instagram @howdoyoudrivethat

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              • Brian.B
                Brian.B
                Brian.
                wrote on last edited by
                #7

                So, I checked everything, fuses, grounds, plugged all the electrical that I removed back in, still nothing! At this point I was like, fuck it. I guess I won't have those luxuries of what most of my previous vehicles didn't have anyways. I moved on. Well like 5 day's ago, I blew a fuse. (I check ALL fuses religiously dunno why). Come to find out, the fuse for all the things that didn't work, was lose, the prongs got lose, so I just rebent them back together, and VIOLA. ERRYTHING WORKS.

                instagram @howdoyoudrivethat

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                • B
                  B
                  B C
                  wrote on last edited by
                  #8

                  If only you had listened to Boris3

                  tsk tsk

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                  • Brian.B
                    Brian.B
                    Brian.
                    wrote on last edited by
                    #9

                    I did it wasn't blown just lose

                    instagram @howdoyoudrivethat

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                    • B
                      B
                      Boris3
                      wrote on last edited by
                      #10

                      I've seen loose main relays and fuses cause all sorts of problems. Checking them to see if they are loose or blown is always a good starting point.

                      Glad it all worked out.

                      1990 325i racecar (ITS, former Spec E30); 2004 330i ZHP

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                      • need4speed1299N
                        need4speed1299N
                        need4speed1299
                        wrote on last edited by
                        #11

                        Moved to general technical for future reference.

                        sig3zps7bd08024.png

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                        0

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