Help me please, ripping my hair out,forgot not got any lol

[mar.600]

Rite guys
fitted the pro 7 sports autocom no probs.
Its linked with kenwood 3201 radio
and fitted an bluetooth btm 20a
all is up and working .

Here goes the probs

1 kenwood speaks to midland g8 pmr radio can hear it no probs. But midland does not speak back nothing no sound arghhhh. ??

2 btm 20a bluetooth does not pick up or pair with garmin nuvi 1690 sat nav. . It picks up my iphone/ other phones etc.

What can i do ???
Can i link up sat nav ??
Or link up my phone to bluetooth and my app tomtom for europe
going to france on friday
any help would be greatly welcomed or recommendations

oh ipod connection works great . Does not tell me directions lol