SR dash dimmer for under $5 – THE ONLY WAY
1 Phillips head screwdriver
2 Side cutters
3 Soldering iron
4 Electrical tape
5 10mm drill bitParts required
1 Single turn 1K 0.5W pot (Jaycar RP3504)
2 Knob to suit above (Jaycar HK7717)
3 500mm twin core cable or similarProcedure using above parts
1 Remove instrument cluster (AKA dash) (if you can’t work this part out, then don’t proceed!)
2 Locate the only Green (GN) wire and cut it down stream of the connector.
3 Solder the twin core wire and tape up the connections and run the wire down to where you want the potentiometer (pot) to be.
4 If you are using the same pot as me, you need to cut the shaft down to approx 15mm in length before proceeding.
5 Solder the ends of the wire to the pot in the exact same position as I have. It doesn’t matter what color or wire is soldered, just the terminals used on the pot. This will provide the lights to dim with clockwise rotation.
6 Bore out the hole in the fascia to 10mm where the pot will fit.
7 Put pot in the fascia and take note of the locating tab on the pot, it fits straight into a factory locating hole.
8 Push the knob onto the shaft and put everything back together.
9 Go and show the missus how clever you are.Procedure using the factory Toyota dimmer switch
1 Follow the above steps 1 – 3.
2 Locate the white 2 pin factory connector and cut it off the loom allowing some length in the wires.
3 Solder the above onto the wires you have run down from the dash.
4 Discard the link plug and then plug the connector into the dimmer switch that you have already mounted in the fascia.
5 Go and rub one out.
This is the only way to do the job as the SR dash doesn’t support the factory wiring that the SR5 uses.