1979-1993 & 94 Conv [Subscribe to Daily Digest] |
 | [Main C900 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
It is possible Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Thu, 4 Nov 2004 06:38:50
In Reply to: Can I add a heated seat switch to my '83?, Saabpilot  [Profile/Gallery]
, Wed, 3 Nov 2004 20:34:10
Members do not see ads below this line. - Help Keep This Site Online - Signup
|
However, it requires more than just the switch.
In your '83, there is a simple thermostatic switch buried in the seat along with the heater pad. When the switch drops below 50 degrees or so, it closes, and puts 12 volts to the pad. The switch opens around 75 degrees. Simple. (Note - I may be off on the exact temps). The seat gets 12 volts and ground. Period.
The controller seen in later 900 and all 9000 operates differently. There are three wires coming out of the seat - a ground, the electrically 'hot' side of the heating pads, and a thermistor - a temp sensor buried in the seat. No thermoswitch. The pad 'hot' and the thermistor go to the seat controller in the dash. The controller has some electronics and a relay. If the controller is set to off, nothing happens, no matter how cold it is. When you turn the controller to a setting, the controller looks at the signal from the temperature sensor buried in the seat - if it's colder than the setting on the switch, it closes the relay and puts 12 volts to the pads. Once the seat temp rises to a little above the pad temp, the relay opens. The relay opens and closes, regulating the pad temp. For warmer settings, the relay stays closed longer.
So if you want to install the controller from a later car, my recommendation is to pull the pad, controller, and connector from a later car. I would aim for a 900 seat, because the pad is different for a 9000 seat. You'll need to add the wires from the pad to the dash controller, and get power as necessary. If you can find a junker, cut out the connector for the controller, also. If you want to get fancy, you can also hook up the light inside the controller to the instrument lighting.
posted by 192.249....
, Wed, 3 Nov 2004 20:34:10
, Thu, 4 Nov 2004 07:25:59, Fri, 5 Nov 2004 21:25:16, Thu, 4 Nov 2004 06:38:50 <-- Viewing This Message, Thu, 4 Nov 2004 07:50:49
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
