Hmmm, instrument panel only lights up when i hit the brakes... | FerrariChat
Buy

Hmmm, instrument panel only lights up when i hit the brakes...

Discussion in 'Technical Q&A' started by Capone, Jun 10, 2005.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Capone

    Capone Formula Junior

    Mar 29, 2005
    252
    Midwest
    #1 Capone, Jun 10, 2005
    WTF is this , seriously. It's a 1990 TR.

    Before the green "p" light on the lower left side would not ever light up. Now, that light comes on if I hit the brakes and the lights are OFF.

    If the lights are on (the instrument panel wont be lit) the "P" light is on constantly UNTIL I hit the brakes. At which point the instrument panel lights up and the "P" light goes off. Nice huh?

    Any ideas?
     
  2. jimmycinla

    jimmycinla Rookie

    Jan 11, 2004
    8
    #2 jimmycinla, Jun 11, 2005
    Oh, come on guys! It's so simple maybe you need a refresher course. It's all ball bearing nowadays. Now you prepare that Fetzer valve with some 3-in-1 oil and some gauze pads.

    -Fletch (Mechanic Extraordinaire)-

    Sorry, I had to.

    -jc-
     
  3. DGS

    DGS Seven Time F1 World Champ
    Rossa Subscribed

    May 27, 2003
    72,516
    MidTN
    Full Name:
    DGS
    #3 DGS, Jun 11, 2005
    Generally, when you have lights on in bizarre combinations, it means there's a ground missing somewhere (in a switched voltage system). Instead of current going through a lamp to ground, it's going through a lamp to another lamp (or lamps) to somewhere else.

    You might want to check the grounding points, to see if a wire has come loose.

    In a switched ground system (power to all lamps, ground one to turn it on), there may be a power feed missing.

    But in general, when you have lamps in odd mixes, the current is running backwards through one of them. ("Backwards", relative to how the circuit was designed -- incandescent bulbs don't care which way the current flows.)
     

Share This Page