Steering Wheel Controls

[Chrsto4]

So if it came from the dealer with cruise already in the stalk, will those two wires on the clock spring still be available to hook up to the steering wheel controls? And are two enough if the Scion xD steering wheel has 5 functions (Mode, vol up/down, + -)? Pardon my ignorance on the electronics side. Thanks to you both so far.

[CTScott]

Originally Posted by Chrsto4

So if it came from the dealer with cruise already in the stalk, will those two wires on the clock spring still be available to hook up to the steering wheel controls? And are two enough if the Scion xD steering wheel has 5 functions (Mode, vol up/down, + -)? Pardon my ignorance on the electronics side. Thanks to you both so far.

If the cruise stalk is factory (i.e. on the right side of the steering wheel) then the wires are in use. If it is dealer/port installed (stalk on left side) then the wires are still available.

The buttons are multiplexed to work over a single pair of wires.

[goku87]

Originally Posted by CTScott

Correct. Unfortunately my aftermarket HU doesn't support steering wheel controls. On my Xterra I modified the OEM steering wheel controls to work with the Sony HU I put in it (just had to change the resistor network).

Originally Posted by CTScott

If the cruise stalk is factory (i.e. on the right side of the steering wheel) then the wires are in use. If it is dealer/port installed (stalk on left side) then the wires are still available.

The buttons are multiplexed to work over a single pair of wires.

1st Question:

What would be so hard about putting in a few extra wires?

2nd Question:

In regards to your not being able to connect the controls to the head unit, if your head unit has a remote, and you are willing to sacrifice that remote, it should be easy to re-wire all the buttons on the steering wheel to the buttons on the remote to control the HU, provided you can add more wires to begin with (see previous question...?).