Dash/Instrument lights
#1
Dash/Instrument lights
Further to a recent post regarding a lack of any dash/instrument lights, I have made a little progress but am still in the dark! Just to be clear, the lights in question are those that illuminate the speedo, rev counter, fuel and temp gagues etc.
I discovered that the 10 amp fuse in the rear passenger heelboard had blown. I replaced it, switched on the lights, turned the dimmer switch up slowly and the fuse popped again.
Having poked around under the steering column, suspecting a possible short due to the movement of same,what I know at the moment is this;
The RED/YELLOW supply in to the dimmer carries 11.67 volts. Possibly a bit low as the car isn't in constant use at the moment. The RED/GREY line out carries 9.99 volts. This is with the dimmer switch turned right down to the off position, after the "click". If I turn the dimmer up full they both carry 10.50 volts. The problem arises when I switch the ignition on. With the ignition off, I can turn on my exterior lamps but the dash stays dark. When I turn the ignition on and then the exterior lights, the fuse will blow as soon as I turn the dimmer up about one third of the way. PS. The colour coding given here may be a bit suspect as it was dark under the steering column and the inspection lamp made everything a bit too bright. Anyway, would a possible short at the ignition switch be to blame? Anyone know the colour code/wiring from the ignition switch that feeds the dimmer/lights and is there another circuit in tandem with this one. Confused and bewildered and any help or input greatly appreciated.
I discovered that the 10 amp fuse in the rear passenger heelboard had blown. I replaced it, switched on the lights, turned the dimmer switch up slowly and the fuse popped again.
Having poked around under the steering column, suspecting a possible short due to the movement of same,what I know at the moment is this;
The RED/YELLOW supply in to the dimmer carries 11.67 volts. Possibly a bit low as the car isn't in constant use at the moment. The RED/GREY line out carries 9.99 volts. This is with the dimmer switch turned right down to the off position, after the "click". If I turn the dimmer up full they both carry 10.50 volts. The problem arises when I switch the ignition on. With the ignition off, I can turn on my exterior lamps but the dash stays dark. When I turn the ignition on and then the exterior lights, the fuse will blow as soon as I turn the dimmer up about one third of the way. PS. The colour coding given here may be a bit suspect as it was dark under the steering column and the inspection lamp made everything a bit too bright. Anyway, would a possible short at the ignition switch be to blame? Anyone know the colour code/wiring from the ignition switch that feeds the dimmer/lights and is there another circuit in tandem with this one. Confused and bewildered and any help or input greatly appreciated.
#2
Further to a recent post regarding a lack of any dash/instrument lights, I have made a little progress but am still in the dark! Just to be clear, the lights in question are those that illuminate the speedo, rev counter, fuel and temp gagues etc.
I discovered that the 10 amp fuse in the rear passenger heelboard had blown. I replaced it, switched on the lights, turned the dimmer switch up slowly and the fuse popped again.
Having poked around under the steering column, suspecting a possible short due to the movement of same,what I know at the moment is this;
The RED/YELLOW supply in to the dimmer carries 11.67 volts. Possibly a bit low as the car isn't in constant use at the moment. The RED/GREY line out carries 9.99 volts. This is with the dimmer switch turned right down to the off position, after the "click". If I turn the dimmer up full they both carry 10.50 volts. The problem arises when I switch the ignition on. With the ignition off, I can turn on my exterior lamps but the dash stays dark. When I turn the ignition on and then the exterior lights, the fuse will blow as soon as I turn the dimmer up about one third of the way. PS. The colour coding given here may be a bit suspect as it was dark under the steering column and the inspection lamp made everything a bit too bright. Anyway, would a possible short at the ignition switch be to blame? Anyone know the colour code/wiring from the ignition switch that feeds the dimmer/lights and is there another circuit in tandem with this one. Confused and bewildered and any help or input greatly appreciated.
I discovered that the 10 amp fuse in the rear passenger heelboard had blown. I replaced it, switched on the lights, turned the dimmer switch up slowly and the fuse popped again.
Having poked around under the steering column, suspecting a possible short due to the movement of same,what I know at the moment is this;
The RED/YELLOW supply in to the dimmer carries 11.67 volts. Possibly a bit low as the car isn't in constant use at the moment. The RED/GREY line out carries 9.99 volts. This is with the dimmer switch turned right down to the off position, after the "click". If I turn the dimmer up full they both carry 10.50 volts. The problem arises when I switch the ignition on. With the ignition off, I can turn on my exterior lamps but the dash stays dark. When I turn the ignition on and then the exterior lights, the fuse will blow as soon as I turn the dimmer up about one third of the way. PS. The colour coding given here may be a bit suspect as it was dark under the steering column and the inspection lamp made everything a bit too bright. Anyway, would a possible short at the ignition switch be to blame? Anyone know the colour code/wiring from the ignition switch that feeds the dimmer/lights and is there another circuit in tandem with this one. Confused and bewildered and any help or input greatly appreciated.
Good luck!
Thread
Thread Starter
Forum
Replies
Last Post
rsa760041
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
23
09-25-2015 01:33 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)