New stereo - Will it affect handsfree?

[skip_1]

No idea if anyone will know but:
Going to fit a new stereo to my Astravan. Currently has the original tape deck (old model van), and has a Nokia handsfree wired in. I can put in the Vauxhall to ISO converter wire easy enough, but will the handsfree wires just slot in somewhere?

Cheers for any advice.

ETA: It's a Nokia CK-7W.

Edited by skip_1 on Thursday 22 January 21:01

[skip_1]

Moved to Home Cinema & Hi-Fi. Splendid

[skip_1]

I didn't think that the speaker wires would be spliced. Could just be a straight swap then. I'll give it a go. Thanks for the advice.

[skip_1]

Cheers Chris. I just connected the ISO's, put the aerial connector on and shoved it in the dash. Works a treat. I didn't even bother to wire in the telephone mute wire, but the Nokia somehow attenuates the sound anyway

Edited by skip_1 on Sunday 25th January 15:48