Remove
cover cap with horn button from steering wheel.
Remove
upper signal switch panelling.
To
do this, remove 4 screws, turning steering wheel 90° to left or right each time.
Remove
instrument panel panelling.
2
screws
Pull
off wiring harness from switches.
Cut
out indicated opening for speaker control from removed instrument panel
panelling.
Connect
speaker control according to circuit diagram - see "Radio, Equalizer,
Loudspeakers and Speaker Control, Service Install" - and screw on to
instrument panel panelling.