Relay Feed?

[1340]

Can anyone suggest a signal wire to run a relay? Passat, 1993, diesel.
Key on-on, key off-off (with key in ignition switch).
Colours?
Thanks.

[somolovitch3]

What are you trying to switch? Are you trying to access an existing wire, or add anew one?

If your radio turns on/off with the key, that fuse could be tapped for the feed.

Or you could tie into the output side of the X relay.