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Thread: Can I bypass bbq'd instrument light dimmer on 89RRC?

  1. #1
    Join Date
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    Can I bypass bbq'd instrument light dimmer on 89RRC?

    The instrument panel light dimmer wheel (rheostat) bbq'd itself (transistor burnt out). Since we always have the lights on the brightest setting, can I just bypass the rheostat all together? ie feed the signal wire with 12v from the light switch?

    thanks in adv,
    taz.

  2. #2
    Join Date
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    Quote Originally Posted by Taz View Post
    The instrument panel light dimmer wheel (rheostat) bbq'd itself (transistor burnt out). Since we always have the lights on the brightest setting, can I just bypass the rheostat all together? ie feed the signal wire with 12v from the light switch?

    thanks in adv,
    taz.
    Yep, I did when I put my LED globes in to keep it a full 12V.

    Will take a look at what I did as I cant remember.....

    I bypassed it on the outside somehow. Will take a pic and post it tomorrow... ish....

    Cheers

    Andrew

    PS... The red went down well with a roast last weekend

  3. #3
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    Thanks Andrew,
    No need for a pic - I have the wiring diagram and I can apply a jumper at the 3 pin plug. I just wasnt sure that all the down stream instrument lights were 12v.
    Thanks again!
    Cheers,
    taz.

  4. #4
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    Bugger - spoke too soon!

    Of course there was a reason the transister blew - a short somewhere in the instrument light circuit. Just spent a frustrating afternoon trying to locate it. I isolated the instrument binacle, heater panel, clock light, aux switch panel, steering column, etc and yet the short is still there.

    From the rheostat dimmer, the signal wire (red/brown) disappears into a thick wiring loom under the steering column. According to the Rave CD, it then goes to a splice connector where it is distributed to the various light circuits. Unfortunately Rave is for the 1995 model and mine is an '89 - so I'm not sure this splice connector exists - I cannot find it anyway - which is a bugger because it would be easy to isolate the fault if I could get to it. The only wiring diagram I have for the '89 is more of a schematic and doesnt have the splice details.

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