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mtb50 · 01-06-2021, 05:40 PM

I've received a lot of info on this forum and many thanks. I have a 2000 boxster 79k miles that needs a lot of TLC. I've replaced motor mount, convertible top transmission gears and top at some point etc. Both drive and passenger windows do nothing. I connected a hot wire to the window switch to check motors and they are both OK. With a test light I do not have a hot wire at the window switch plug should I and if so what does this connect to.

Radman · 01-06-2021, 06:32 PM

Keep up the good fight. I’ve only had mine for a week and a half and am in love. The only thing lacking is some power, and that can be fixed with several options of larger motor.

78F350 · 01-06-2021, 06:40 PM

The wire harness from the door has a large connector at the door hinge. I have seen some that are loose, one that had a couple broken wires, and I have heard of some people that had corrosion on the connectors.

Jamesp has some great pictures showing the door wire harness connector here:
Adding door speakers and wiring Part1

I don't have my wiring diagrams handy, but I can probably track down the door switch connections tomorrow if you are still looking. Check fuses yet?

piper6909 · 01-07-2021, 04:47 AM

Quote:

Originally Posted by mtb50

I've received a lot of info on this forum and many thanks. I have a 2000 boxster 79k miles that needs a lot of TLC. I've replaced motor mount, convertible top transmission gears and top at some point etc. Both drive and passenger windows do nothing. I connected a hot wire to the window switch to check motors and they are both OK. With a test light I do not have a hot wire at the window switch plug should I and if so what does this connect to.

Welcome to the forum. Do the windows drop down a few inches when you open the latch for the convertible top? If so, you don't have a problem with the motor, wiring or switches. You may have a problem with the immobilizer under the driver's seat.

78F350 · 01-07-2021, 12:43 PM

Looking over the wiring diagram, it looks like power for the window motor is supplied through fuse D1. From there it goes to the door harness(s) to an electronic module in the window motor.

The power for control through the window switches is on the middle connector of the three. It looks like that voltage is sourced through the relay for the convertible top. I have power on that middle connector with the key on or off.

*This information is free and may be completely wrong (at no additional charge).

mtb50 · 01-07-2021, 07:08 PM

No the windows do not drop down. I see what I can do about the immobilizer. I read were some have found the problem with the convertible top relay or the ignition switch. Thanks

mtb50 · 01-07-2021, 07:13 PM

Quote:

Originally Posted by 78F350

Looking over the wiring diagram, it looks like power for the window motor is supplied through fuse D1. From there it goes to the door harness(s) to an electronic module in the window motor.

The power for control through the window switches is on the middle connector of the three. It looks like that voltage is sourced through the relay for the convertible top. I have power on that middle connector with the key on or off.

*This information is free and may be completely wrong (at no additional charge).

I thought it might be the relay. Do you know if there's a way to check the relay? Thanks

piper6909 · 01-07-2021, 08:27 PM

Quote:

Originally Posted by mtb50

No the windows do not drop down. I see what I can do about the immobilizer. I read were some have found the problem with the convertible top relay or the ignition switch. Thanks

If the windows don't drop down, then it's probably NOT the immobilizer. Maybe the relay is a better start. good luck.

mtb50 · 01-08-2021, 05:24 AM

Quote:

Originally Posted by piper6909

If the windows don't drop down, then it's probably NOT the immobilizer. Maybe the relay is a better start. good luck.

I'll see what I can come up with and let you know. This is my first forum so bare with me. I'm having a hard time just getting to my replies. Thank you

piper6909 · 01-08-2021, 01:03 PM

Quote:

Originally Posted by mtb50

I'll see what I can come up with and let you know. This is my first forum so bare with me. I'm having a hard time just getting to my replies. Thank you

No Worries and welcome. In the future, you can post questions in General Discussions.

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78F350 · 01-08-2021, 09:05 PM

Quote:

Originally Posted by mtb50

I thought it might be the relay. Do you know if there's a way to check the relay? Thanks

This may be helpful or at least lead to more questions. Are you familiar with the location of the relay and how to read the Porsche wiring diagrams?

Here's a schematic for the top relay of a 2000 model. You can click on it if you want to see it larger or download it..

Here's a picture from a tech article about an upgraded top relay that shows a good picture of the relay location (red arrow).

mtb50 · 01-09-2021, 09:14 AM

Quote:

Originally Posted by 78F350

This may be helpful or at least lead to more questions. Are you familiar with the location of the relay and how to read the Porsche wiring diagrams?

Here's a schematic for the top relay of a 2000 model. You can click on it if you want to see it larger or download it..

Here's a picture from a tech article about an upgraded top relay that shows a good picture of the relay location (red arrow).

This was very helpful I'm a picture person I'll see if the relay is the problem . Thank you for all the help