This was the easiest upgrade to my 940 yet. Can be done easily to all 1993-1995 940's, and probably to late 740's also. The wiring is all in place in the vehicle, all you need is a new cluster warning light bulb and the washer fluid level sensor out of a 960.

First, confirm your car has the wiring already in place. All 940's I've seen in the junkyards already had it there waiting, ziptied together with the washer pump connector(s). Look at the existing unused connector so you can be sure you get the right version of the sensor.

Then go to the junkyard and get:
-spare cluster warning light bulb. (Get several, you should always have spares of these around)
-washer fluid level sensor assembly from a 960 washer tank. Get the sensor with wiring connector attached, the plastic cap, and the rubber washer under the cap. 760's also have washer level sensors, but they have a different connector and you'd have to do some wiring modifications to make it work in a 940. The 960 style is plug-and-play. Be GENTLE unscrewing the sensor from the top of the tank, the plastic cap can be brittle and split at the top edge. The screw cap for the sensor is actually the same cap as on non-sensor cars just with the center knock-out punched through.

get the airbox out of the way on your 940. (Now's a great time to change your air filter, BTW). If you have a Regina car, be VERY CAREFUL not to tug and abuse the wiring to the air temp sensor when you unclip the connector from the sensor body. With the sensor connector off, everything should lift up and out of the way. Gently unscrew the plain black cap in the middle of your washer tank, drop the new sensor down into the hole so it seats firmly, make sure the rubber washer sits on top of it, and screw the cap down. Not too tightly or it will break. The contacts in your unused connector are probably pretty dirty and corroded--clean them up with a small wire brush, then plug it into the sensor connector.

-remove instrument cluster, remove red/orange "dummy" socket from the fourth socket on the right (looking at the rear of the cluster), and seat the replacement bulb in that space. The washer fluid icon is already there. Reinstall cluster.

-make sure everything is reconnected and reseated under the hood.

-start the car. The light should illuminate on startup just like all the other functioning warning lights.

Installing it took me about 20 minutes, start to finish. If you've never removed the instrument cluster before, be aware that removing the black metal trim bezel from the cluster is the most challenging part of this job.

John


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1989 245 245K / 1993 945 131K