Vehicle & Technical > Defender
Heated Windscreen
Bush Tucker Man:
--- Quote from: "Mark_Solesbury" ---
I assume that the poor performance is due to the low voltage getting to the screen??
--- End quote ---
Is the cable 'man enough' to handle the current??
Mark_Solesbury:
Probably not, which is why im gonna get some proper stuff at lunch time.
Any recommendation's on girth?
L90OOK:
Some decent 27.5 Amp wire should be good enough.
Make sure you have a good crimp tool too. Don't use the scotch blocks for jumping wires...wire it properly!!
If you can get some heatshrink terminals I'd use them...I know how wet the inside of the windscreen can get! :shock:
You may well be overloading your switch if you are running your rear & front screen from it...wire in a quality second switch for the front screen.
From CROYTECH
Litch:
Yep, sounds to me like it has been wired in with whatever was to hand at the time instead of the correct gauge wire and therefore you are suffering quite a lot of volt-drop.
I seem to recall when I did mine that the current draw is something in the region of 30A (can't remember if that is each side or combined) so don't assume that the same stuff you wire a radio or spot-light up with is going to do the job.
The correct sized cable & switchgear are essential to make it work correctly, don't tee into existing circuits unless it is only for the control side of the relay.
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.
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