[Back Up Light Switch]

You will need to tap into the Light Green wire coming off of the Transmission Position Switch mounted on the transmission. It has a six wire plug and looks like it is mounted on the top rear of the transmission. The diagrams I'm looking at are for a '90 Caprice. If you need the diagrams give me your e-mail address and I'll send them to you.

Good luck,

Jim Wood

Thank you for the information. I would appreciate your sending me the wiring diagrams, e-mail is dhansen@earthling.net. I will be installing some new exhaust tips soon and hope to install a vampire tap on the designated light green wire while the vehicle is on the lift. Again thanks, it's nice being able to ask questions and know someone who cares about the vehicles is out there.

Dan Hansen

[Back Up Light Switch]

Can anyone tell me where I can locate (tap into) the back up light circuit? There is no switch I can locate on the shifter or transmission. I am working from jack stands and do not have easy access to a lift. All of the pictures I can find of the GM switches appear to be for column shifts and that does not seem right. Any help appreciated. Thanks.

[Power window failure]

I have never seen a '90 'close-up and personal' for very long so ... IF you have the 'old fashion' inside door handle (looks like all other Avanti's) the removal tool will work. The handle is held on by a simple spring clip. The TRICK is to place the tool in the right place (you may have to remove the armrest first (you'll have to remove it anyway if you're removing the door panel). You should have a plastic round bezel behind the handle - behind the bezel is a round plastic (call it a washer if you will). Slide the 'tool' between these two plastic pieces (you aren't going to SEE anything) you just have to Feel your way from the front OR the back as you slide in and out. Before you know it the handle will be loose and will come off.

As far as behind the passenger side instrument panel - same thing - not sure what this car looks like, BUT my '88 has this big one piece carpeted fiberglass cover/shroud to cover the AC/vent/fan etc.. This can be removed with a screw driver (the screws are hidden under the carpet). I never did put mine back on (a pain). I even found the 'computer' stuck under there wedged right behind the front of the instrument panel passenger side. I moved that out as well and never put it back (mounted it on the side of the console).

Don't give up!

Bill

Thank you for the information. We have been successful in dismanteling the interior of the vehicle without incident. As the shop manual I have is for the Studebaker models, it concentrates on manual windows, so I have decided to take the window adjustment to a glass shop.

One other question has come up in this process. Though it does not concern the current project, how do you remove the shifter handle? We have been able to access the wiring we need by rotating the cover panel, but some future project may need more access.

Again thank you,

Dan

[Power window failure]

I have a 1990 unit with a window problem as discussed, and have found the postings on this topic very useful, however, how do I remove the door handle? I have found the door handle removal tool to be useless and there is not enough room to compress the door panel to see what I presume is a retaining clip on the handle. I really do not want to damage the leather door panel.

Also, my remote locking unit has died and I am trying to install a new Viper unit. The old unit, based on the activation switch wiring appearing to be wired into the factory wiring harness, seems to be factory installed. Does anyone know if these units were original equipment, either as an option or as standard equipment? Either way, does anyone have an idea as to where the physical location of the alarm system control unit might be in the vehicle?

Finally, for now, it appears I may need access to behind the dash panel, particularly on the passenger side. Any suggestions??