J.D.,
The 124.128's system operates like this also:
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"Yes, mechanical. The convenience relay should close the sunroof and all four windows. You turn the key to "lock" and hold it there for more than 5 seconds and everything should close.
If you change your mind a few seconds after closing you are supposed to be able to reverse the key (to "unlock") and the things that closed will re-open. I've never tried that with my '95 but that's what the manual says. You have only 10-15 seconds to do this, then the system shuts off.
Jeremy"
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But, the sunroof cannot be opened using the Convenience Control Unit
Actuated by the Key.
"Jumpering" the correct terminals on the Convenience Control with 12V+
Opens and Closes the Sunroof,BUT ONLY when the the Ignition is in "Accessory" or "Run" positions
(Which allows the Convenience Relay [in the Fuse Box to apply power to the Sunroof system.)
There is a receptacle marked xC on the Convenience Control Unit.
It has a plug with 4 wires.
If +12V is applied to position #2 in this plug(Yellow Wire with Violet Stripe)
The Sunroof opens.
(This same wire runs to the "Sliding /Pop-Up Roof Drive Unit in the Trunk,
Position #3 AND can be accessed there.)
If +12v is applied to position #3 in this plug (Yellow Wire with Red Stripe)
the Sunroof closes.
(This same wire runs to the "Sliding Pop-Up Roof Drive Unit " in the Trunk,
position #4 AND can be accessed there.)
If +12V is applied to position #1 in this Plug (Yellow Wire with White Stripe) the Pop-Up feature activates.
(This same wire runs to the "Sliding Pop-Up Roof Drive Unit " in the Trunk,
position #5 AND can be accessed there.)
All three of the above actions require the Ignition to be in "Accessory" or "Run".
The Sunroof's Non-Lifting is probably(UnFortunately) broken Lift arms.
From GSXR's "Website" Pictures of Lifting arms:
Index of /images/W124_sunroof