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Go Back   Australian Ford Forums > Ford Australia Vehicles > Small and Mid Sized Cars > Laser and Telstar

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Old 16-07-2011, 02:31 PM   #1
graham7773
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Default Ford Telstar

Telstar has a strange problem. Headlight bulb works on high beam, does not work on low beam. Before anybody says "blown low beam", the bulb is a single filament and works for both high and low beam. The other side works fine. no fuses blown, I have not found out yet if there 2 relays/fuses for the individual low beam circuits but I do not think so.

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Old 16-07-2011, 02:36 PM   #2
mik
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Default Re: Ford Telstar

so you have tested the globe?
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Old 16-07-2011, 02:47 PM   #3
graham7773
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Default Re: Ford Telstar

The globe serves both low and high beam with a single filament. Works on high beam but not on low beam. Even the harness and plug have only 2 wires/connections. The connector has power on high beam but not on low beam. There are no blown fuses.
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Old 16-07-2011, 06:00 PM   #4
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Default Re: Ford Telstar

Auto electrician at Uralla is an idiot. What he told the previous owners was a load! Trial and error showed me that the outer projectors are the low beam and the inboard lights are high beam. He missed the blown outer bulb. All fixed now.
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Old 16-07-2011, 06:43 PM   #5
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Default Re: Ford Telstar

Was going to ask you how you think a single filament can work as both high and low beam as it just isnt possible.
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Old 16-07-2011, 07:30 PM   #6
Bundy
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Default Re: Ford Telstar

Quote:
Originally Posted by davway
Was going to ask you how you think a single filament can work as both high and low beam as it just isnt possible.

Sory wrong BMW do it. My mothers BMW (twin Head lamps) will drop the Hi beam lamp to Low if the (seperate) Lo beam has failed. To still give you a Lo beam on both sides of the car, then switch it back to Hi beam if you turn on your Hi beams.
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Old 16-07-2011, 10:35 PM   #7
graham7773
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Default Re: Ford Telstar

Thanks bundy, saved me the effort. Was not my thinking, auto electrician at Uralla told the people I bought the car off that story. I have not previously owned a series 2 AX TX5 so did not know until I worked it out. The projector low beam headlights threw me as well. I was thinking they were high beam. A workshop repair manual would be good but they are as rare as rocking horse crap or hens teeth.

Last edited by graham7773; 16-07-2011 at 10:36 PM. Reason: language
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Old 16-07-2011, 11:23 PM   #8
Franco Cozzo
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Default Re: Ford Telstar

Quote:
Originally Posted by davway
Was going to ask you how you think a single filament can work as both high and low beam as it just isnt possible.
BMW X5s only have a single fillament park/brake light, 6V for park, 12V for brake.

Or Bi-Xenon lights, has a solenoid to drop the shield for highbeam, goes back up for low beam from a single HID globe on left/right side of the car.

Those are different stories, but it is possible
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