Fitting heated washer jets


A nice things about modifying an old car is being able to retrofit technology that wasn't fitted as standard or an option to address those little niggles or make driving just that little bit more pleasurable.

One such niggle is frozen up washers on that cold Monday morning. Even if you de-ice and clean your window it is almost guarenteed that during the trip some lorry will kick up a load of slush and when you go to use your wipers the jets will have frozen leaving your wipers to smear the mess to opaque inevitability.

Luckily there is a solution. The MGTF was fitted with heated washer jets as an option, possibly due to its mid-engine configuration being even more prone to frozen jets. The jets were also fitted as an option to Mk3 200's and ZS/ZT's.

If suitable jets can not be found from a doner car, kits are available from an MG/ROVER dealer, part number VUB100220. All 200/TF/ZT/ZS jets are the same as the 600 type, so the kit is a direct fit.

Unfortunatly the jets are not mist type, although Citroen xara mist jets (part number 6438 V8) can be used they are not heated.

In this guide we will look at how to fit the MG kit to a rover 600.


To do this job you will need:

  • Heated washer kit VUB100220
  • Sharp knife
  • Relay
  • Wire
  • Soldering Iron/Solder and Crimper
  • Spade Crimps
  • Insulating tape
  • 2 pin plug and socket [optional]


Important Note:

The official rover kit is designed to be hard wired into the wiper circuit where it takes power from an ignition live. Full instructions in the kit detail a step by step guide.

However for this guide it wasn't envisaged that the jets would need to be on permanently, so a switchable solution was required.

The two logical possibilities are the rear demister or the heated mirror switch - It was decided that in this case, the best solution would be to wire the jets to the heated mirror switch.

Remove the old jets and replace with new heated jets - these are a direct fit and should just press in.

Connect the washer hoses up and clip the plugs to the hose.

Create a wiring loom from the supplied wires and feed through supplied conduit. Cable tie loom to washer pipes and thread the cable down towards the bulkhead.

Note: In this fitting it was decided to include a plug and socket to allow easy bonnet removal, if you are fitting a connector you should size the loom to suit the positioning of the connector.

The connector used to allow the bonnet to be easily removed without unclipping the loom from the washer pipe

Remove the carpet and door sill from the passenger footwell to expose the wiring loom running down the side of the car.

Locate the thin orange wire in the loom - this is the feed from the heated mirror switch to the mirrors.

Splice another wire into the orange feed, solder and tape up the joint. The trim and carpet can now be put back.

Feed the spliced wire through the bulkhead to roughly the same area as the feeds to the jets.

The mirror circuit isn't suitable to supply the jets directly and a relay must be used.

In this case the spliced wire was used to trigger a NO SPST type relay which was fed via a 7.5amp fuse from the starter motor main positive feed, which is connected to the main battery + terminal.

Join the earth for the jets and the relay together and extend to a suitable earth point (in this case by the ABS pump).

Mount the relay securely and tidy the wires.

A simple but effective modification, the tidy wiring and use of the mirror switch gives the modification a "stock" feel. This should have been fitted as standard.