R32 Parker Lights On When Key On

[nismo091]

Hey my mate got an r32 gtst the other day and we are Having trouble with the Parker lights, the Parker lights come on when key is turned on accessories and does not come on when you turn the switch on, I had a look behind the dash cluster to see any sign that it was tampered with but all seems normal, its not switch because with out the dash cluster plugged in and surround with the switch not plugged in it still happens, however the plug that plugs into the park lights and drive lights looks to be a slightly melted and black on two plugs as if there is a short somewhere. note that it is not blowing fuses Opinions?

[Kane_R32]

When you refer to "parker lights", are you including the rear park lights, front park lights and dash lights all coming on? and then all going off when the switch turned on?

Sounds like a earthing problem.. Do the low beam and high beam all work correctly? What happens when the key is out of the ignition and you try turn the park lights on?

[nismo091]

Yes when the key is turned to accessories the dash lights come on Parker lights front and back and that beeping sound, and when key is off it all turns off, when key off an you turn Parker's on from the switch there's nothing turn the switch again and driving lights come on

[sleptema]

Because of the low current draw on the park light circuit, a short can light up the parks tails and dash quite easily.

I would try an isolation test. I am not sure how the lights are wired but - have the key on and the park light switch off.

I would start in the engine bay - find the plug nearest to the drivers side parkers and unplug it. What happens? Plug it back in and try the passenger side. What happens? Now try both the tail lights one side at a time, noting what happens then plug them back in to try the other side (should be behind the material in the boot) If no plugs are found, remove the globes instead (careful - hot)

When you turn the switch on for park lights, do they glow slightly brighter?

[nismo091]

Thanks will try that and see what happens

[nismo091]

Voncina I tried what you said and nothing also the driver headlight is not working have changed the globe still nothing got a test light on it and no power to the plug but when I pull the stalk it had power, I had a similar problem with mine but ended up being I had to change the dash cluster and it fixed up but I also had no rpm signal and temp gauge so can't be that I'm thinking the old owner hooked the turbo timer and or electronic boost gauge up wrong causing a short maybe? We have traced the loom back all seems fine and there is power at the fuse box also

[sleptema]

I highly doubt that if something like an ebc or turbo timer is wired incorrectly in the dash would somehow affect only the drivers side headlight.

If you have tested at the stalk and are getting power there, and none at the light, chase the harness back from the light, checking for any wear on plugs, harnesses - where they go through grommets are usual bad spots. If the passenger side is working, and the drivers is not - find where the harness T's off for the passenger side/drivers side and the fault will most likely be between the T and the faulty light.

Hope I am helping.

[nismo091]

Update, I pulled turbo timer out and electronic boost gauge and head unit out to find the Parker light problem, the boost gauges power source was coming from the headunit as there is a Parker wire (blue/red) witch is ilumination for factory headunit and they had tapped into this causing the Parker's to have power when the key is in on position, however I still have the driver side headlight not working

[Kane_R32]

Rather the probe the plug, try a few cm's up the wire... see how you go

[niZmO_Man]

Ahh dodgy wiring, aren't they fun?

Headlight = switch. Replace it or wire up relays (trigger wire off the passenger side). I recommend relays with thicker wires.

[nismo091]

Done driver headlight has no power to driving light only on high beam so just bridged from other side for now, thanks for the help.