Vehicle & Technical > Defender

Heated Windscreen

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Elmo:
Given the price of relays I'd use the second option and then you can wire the lot in 30A cable, otherwise you'll need a 60A feed and relay. Fuse each side and then if the damp pixies get in you may not lose both sides.

If you've already got a big relay and cable.....either :)

Darren:
The factory arrangement uses one large 70 amp relay :shock:

Litch:
Personally I used two 45A relays fed from two separate fuses on the aux fusebox and one control switch (VWP sell switches with all the correct symbols on). The cost difference is negligable and I always like to over-engineer.
When working properly you should find it demists within 2-minutes of turning on and a good covering of ice will start to melt soon after.

Unless you are certain you will always remember to turn it off consider using a timer relay. I believe that OE spec is to only allow the relay to operate when the oil-pressure light has gone out (this confirms that the engine is running and you are not going to rapidly drain your battery) but can anyone confirm this is correct?

L90OOK:

--- Quote from: "Mark_Solesbury" ---Plan is to attack it at the weekend.

Thing is - Whats the best way to split it to the 2 +ve's on the screen?

Run Straight from battery (via fuse) to Relay. Out from Relay with 2 cables to  each terminal on screen using a 12v feed to switch?

Or do 2 runs with 2 relays that can share an earth and a switch.
--- End quote ---


You can get all the relays, connectors, wire etc... from Vehicle Wiring Products.
I have used them a few times & always delivered fast & reasonable prices.

muck_truck:

--- Quote ---
You can get all the relays, connectors, wire etc... from Vehicle Wiring Products.
I have used them a few times & always delivered fast & reasonable prices.
--- End quote ---


its a bit like a sweet shop their online store!  i went on today to order some relays and switches for the heated seats i just fitted to my 90 and the order ended up at £124!!!

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