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Heated Windscreen - Drivers side issue
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ibruceuk
 


Member Since: 20 Mar 2018
Location: Lancashire
Posts: 105

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3
Heated Windscreen - Drivers side issue

Hi all,

As it's getting colder I notice that the drivers side of the windscreen takes a lot longer than the passenger side to heat up and clear. The passenger is a couple of minutes but the drivers is probably about twice as long.

The screen is relatively new after having it replaced due to a crack. It is Pilkington branded OptiKool glass as I demanded from AutoWindscreens.

I've checked the spade connectors at the A-pillar and all seems ok, the fuses seem good and not corroded. Does anyone know where the earthing point is?

Thanks,

Ian
  
Post #201931917th Jan 2019 8:40 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10337

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

well if you measure the voltage drop between the earth spade connector and cigar lighter ground (with heater/engine on).

If it's less than 0.5V its not a grounding issue.

If you have the passenger pilar off you could measure the voltage difference between the passenger and drivers side. (with screen on)

either between both + connectors.
or with respect to ground, in turn

That should tell you if its related to the car and fixable or the screen
  
Post #201937317th Jan 2019 12:16 pm
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ibruceuk
 


Member Since: 20 Mar 2018
Location: Lancashire
Posts: 105

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Yeah that's what I was thinking. There was over a volt difference between the ground side of the elements so I think it is a suspect ground. To save tracing it I've added a new ground on the A-pillar itself with a ring terminal and drilled and tapped a hole.

Let's see how it works in the morning Smile
  
Post #201963017th Jan 2019 11:18 pm
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ibruceuk
 


Member Since: 20 Mar 2018
Location: Lancashire
Posts: 105

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Just to update, with this mornings ice I could actually test it.

The result... Yes it was a bad earth and the new earth works wonders clearing slightly faster than the passenger side now!
  
Post #202109422nd Jan 2019 12:59 pm
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yogi972
 


Member Since: 05 Jun 2011
Location: Kineton
Posts: 3372

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Alaska WhiteDiscovery 4

Brilliant!
Great result, thanks for sharing and keeping us updated Thumbs Up
  
Post #202116422nd Jan 2019 5:05 pm
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