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Harstop demister, yes... Another one...

 
Old 01-29-2019, 12:41 PM
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4jw
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Default Harstop demister, yes... Another one...

Been an arduous struggle with this hard top business and I would like to get to the bottom of it!
done some reading but unless im reading wrong, i should have everything to make it work?

1.2003 uk ap1 WITH HEATED REAR GLASS on soft top. Switch is behind the gear gaitor below my left wrist/forearm
2. Got this currently wired up but the hardtop doesnt demist.

This is 2/3 connectors fitted but no demisting...

The left loom is what i have fitted behind the passenger


I dont have this but I'm confused as some guides say the last connector fits here, another says it fits to this


I had a dig into my boot around the fuel line but I cant find this random brown connector.

3. Does this cable im holding fit into the bracket or this elusive " Brown connector"? Do I need it?

guides are conflicting depending on year and its not all that clear to me.

fyi, soft top is still there but dont plan to use it. What am I doing wrong?
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Old 01-29-2019, 01:46 PM
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Old 01-29-2019, 01:56 PM
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Ive come across that and I've read that this bracket does not need to be connected for the demister to work.

Can anyone try it out? Cant justify 300 odd pounda spend on this bracket because my hardtop is staying on
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Old 01-30-2019, 03:41 PM
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The left side bracket has a pin switch in It, when the hardtop is fitted it diverts power to the hardtop demister connector, instead of the softtop screen that is folded away.
That bracket is also a rear anchor point for the hardtop, unless you are fitting rigid ones.
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Old 01-31-2019, 12:10 AM
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Surely then, the cheap by pass would be to plug a wire into the 2 pins to close the circuit?
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Old 01-31-2019, 01:16 AM
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Originally Posted by Booti View Post
The left side bracket has a pin switch in It, when the hardtop is fitted it diverts power to the hardtop demister connector, instead of the softtop screen that is folded away.
That bracket is also a rear anchor point for the hardtop, unless you are fitting rigid ones.

Im not 100% sure on the curcuitry from the hardtop body mount, i know it has a pressure switch on it but i thought that was just to tell the system the hardtop was on and the soft top would not go up if the switch was hit by mistake but looking more into it it dose control the rear heated screen, i will need a solution for this aswell as i sold my brackets

edit found this https://www.s2ki.com/forums/uk-irela...witch-1103841/

looks like its the little prong sticking up just in front of the hole where the hardtop locates

just need to find out what the switch dose in terms of voltage when pressed and chuck in a resistor to your open plug to simulate that it is there and being pressed

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Old 01-31-2019, 04:54 AM
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That was my trail of thought but as I have never come across one, I dont know. Resistor would have been multitudes cheaper!
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Old 01-31-2019, 05:39 AM
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Thought I'd posted this but seems not? anyway, why not just run a feed via a switch/relay to the hard top window wiring independent of the car's loom? easy/ cheap mod and should work until somebody has a definitive answer to the wiring conundrum.
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Old 01-31-2019, 09:14 AM
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Had a look at the electrical schematic book, this is for facelift models. Don't know if it helps in anyway.

There is a change over relay that is triggered by the convertible top disable switch being on or off. Pay special attention to schematic 64-1.
Also Pic 104 for location.
Pic 120 shows relay position and diode!

Let me know if you need anymore info.
You will be tracing through all the wiring again for the 100th time no doubt





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