Might be worth posting pics of exactly which plug your working with

 

dont mk2s have a switch that disables the hrw when the roof is down?

p.s i dont know is its the same loom for the hard top

 

I thought they did because they have a heated rear window?

I have read online that they do, maybe I'm wrong.

I will get some pics up tomorrow night

 

Right I forgot about this until I tried to sort it again yesterday but still no luck.

Here is a pic of the loom on the hard top with three connectors.



The wiring from the car has two separate female spade connectors.

How would I wire this up to work?

Also I noticed online that people have said about having a light on the dash when it's on.

Mine's never done this but I do have a light on the switch so is that normal?

 

Anyone?

 

The easiest thing to do is follow the wires from the element in the hardtop so you know which wires to use

 

I've done that and tried wiring them in different ways, still nothing

 

So you are making a harness straight from the connector to the window? This will of course by-passes the switch which is part of the soft top harness.

 

I'm going from the original harness in the car which has two connectors to the harness on the hard top which has three connectors.

So effectively bridging the two.

(Hope that makes sense)

The harness on the hrw will not come off of the two spade connectors it looks like they're going to snap if i keep pulling them

 

Have you got a picture of the connector on the car

 

I can get one tomorrow

Thanks for the help

 

I gecha your fiting a mk2 hard top to a mk1? The third wire on the mk2 is to the aforementioned switch completing the circuit back to the switch. Test the 3 wire harness 2 of the wires will be spliced together these provide a common earth (so it doesn't matter which you connect) the other is your live feed.

 

I gecha your fiting a mk2 hard top to a mk1?

he says he fitted a hardtop to his mk2 in his first post

 

Have you put a multimeter on the loom you have made and the hrw button pressed in?

 

In that case the car should have a 3 pin connector, not 2. No way it can work with only 2 wires. Did ths soft top window work?

 

This is the back of the MK2 connector car side. Blk/red is the +12v , blk is your ground, blk/ wht is the return ground to the switch.
The blk/wht is the one that would earth through the hood up/down switch and needs to be earthed for the switch to trip the relay supplying the +12v feed.
On the hard top harness the blk and blk/wht wires are spliced together completing the soft top switch circuit. The resulting single wire is the earth to the window.

 

I gecha your fiting a mk2 hard top to a mk1? The third wire on the mk2 is to the aforementioned switch completing the circuit back to the switch. Test the 3 wire harness 2 of the wires will be spliced together these provide a common earth (so it doesn't matter which you connect) the other is your live feed.

See this is what I thought, I have the two lives joined with one wire.

Then the other two wires from the three pin connector are joined into one and into the harness on the car.

Yep soft top window worked as that only had two connectors not three.

 

Sounds like it's been botched to buggery, splicing the 2 wires together to get around the missing switch. In which case as long as you connect the middle wire and one or the other of the outer wires on the roof side to the 2 wires car side it should work? Don't think the polarity matter with a rear screen?

 

Right here's how i had it wired i know it looks messy but it was only temp to see if it worked!

I have now removed the loom from the window and now only have two wires straight from the window to the two original connectors and it still doesn't work.
Any ideas?

 

does the light come on at the switch?

 

I've done that and tried wiring them in different ways, still nothing

You may have blown a fuse when you where trying this, the easiest thing to do is get a multimeter and probe the two wires coming from your car for 12v when you have switched it on, then you will know which is your positive and which is your negative.

 

Yep light on the switch works.

I'll give that a go with the multi meter.

The two original wires are black and black with a red stripe so I know what should be my positive.

 

Yep light on the switch works.
I'll give that a go with the multi meter.
The two original wires are black and black with a red stripe so I know what should be my positive.

from the look of your pictures then it should be black/red to white and black to the other two.

 

Yes red/blk is your live, but you need to have 2 other wires both black? These both need to be earthed. One provides the earth for the window and the other the switch (as your light comes on I suspect this is fine). If you are getting no power from the red/blk wire you may need to be looking atnthe relay. You need to get a dvm out and check continuities. Check defog fuse (the switch is a different fuse).

 

Ok I will have a look into where the third wire may be.
And check the fuse!