Vehicle & Technical > Defender

Heated Windscreen

(1/4) > >>

Mark_Solesbury:
My 90 has a heated windscreen. It never really worked well, but was replaced a month or so ago after a massive chip.

So its now got a brand new one in it.

This morning, it was slightly steamed up on the inside. Turned the heated screen on and it did not clear.

The engine note changed as expected from the extra load.

It has 3 wires to it. Negative on each end, and a positive in the middle, and is fed from one relay behind the speedo.

Id this wired up correctly? The screen was on for a good 5 mins, and nothing happened - by this time the heater had warmed up so i used that to clear it.

Id really like to get this working!!

L90OOK:
I'd say you have wired it wrong.  Should be +'ve on each end & -'ve in the middle.  8)

Bush Tucker Man:
Try this article by Ross Floyd

Darren:
I asked a similar question a couple of weeks ago as mine has one that's neer been wired up. You can read the very helpful responses here including a link to an excellent wiring diagram.

Mark_Solesbury:
Right.

Its frosty here this morning, so i thought id investigate.

It is wired up correctly, but its only getting 11 volts the terminals. It does clear a bit, but its not very good.

The alternator is kicking out 14 volts, and thats what i get from measuring across the battery terminals.

I am gonna re-wire it later tonight, with a large cable from the battery though a big relay (75A?) and take a switch wire from the existing heated rear window. Ill wang an inline fuse somewhere. Any suggestions on size?

I assume that the poor performance is due to the low voltage getting to the screen??

Navigation

[0] Message Index

[#] Next page