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Wiring the electric mirrors to the central locking so that
the mirrors folded in when you locked the car
 Equipment
required
- Multi-meter meter (or 12v bulb)
- 2 small 12v relays - nothing special single pole / single
throw will do
- A soldering iron (+ solder)
- Small knife
- Insulation tape
- Small gauge multi strand wire - e.g. car speaker wire
- Patience
Method
- Determine where the central locking control unit is in
the driver side foot well by un/locking the door a bit.
- Using a Multi-meter (or a 12v bulb) track down the two
wires that trigger the central locking, measure here the plug goes in. These
are at +12v until the pulse is send to the central locking when it drops to 0v.
- On each of these wires scrape a small amount of the wire
bare and solder on a length of insulated wire, cover join with insulation tape.
- Gently slider the mirror switch panel out and turn
around. Disconnect the big connector. Remove a small plastic cover from above
the connector to expose a test connector. Solder two wires to the 2 left most
pins, poke in the hole and retrieve at the foot well end (one is mirror open
and one is mirror close). Replace panel.
- Wire up both relays with the following: 1 side of
actuator coil: +12v permanent Other side of coil to length of insulated wire 1
side of relay contacts to +12 perm Other side of contacts to length of
insulated wire.
- Connect the loose coil wire to the output from the remote
locking unit (for both relays - one for each output).
- Operate the central locking to make sure the new relays
operate with the central locking.
- Connect the loose wire from the relay to one of the wires
from the mirror panel, repeat for other relay and panel wire.
- Test by locking / unlocking central locking - you may
have open close the wrong way round - just swap the wires.
- Ensure all bare wires are covered with insulation tape
and the relays are fixed out of the way.
It is good practice to disconnect the car battery when doing
such work but I was worried about loosing the ECU settings (and it keeps you on
your toes!). The problem that means all this has to be done is that the central
locking produces a -12V pulse and the mirrors require a +12 pulse. |
Auto Folding Mirrors