Just ordered one of these (jvc double din)

[Granta Gti]

You are probably also going to need an aerial amp, as the gamma units have them built in.

[jnufcuk]

Shouldnt be too hard to connect. Getting the standard one out is fun, Make sure you have got the keys to do it. Just got to remember to switch the yellow and red wire connectors over if when you plug it all in it doen't remembr your presents.

I never used the keys when I took it out p, I used a pen knife and something else lol. Worked a treat   

[richw911]

Glad I was able to help spend some of your money 

[jnufcuk]

Glad I was able to help spend some of your money 

You could help even more by giving me it back lol 

[big stevie]

i think all new head units use iso connectors i bought one for my golf and then looked at plug which was the same in the car but was seperate as opposed to one peice like iso connector, one plug does all your power and ignition and stuff and the other is all your speakers, i returned it in the end and saved £15 i think, but with iso connector its plug and play if you need one and very easy to do, gone are the days of chopping up half your wiring and then soldering on new wires and tracing which speaker is which, one thing ariel adaptor you will need then again some come in the box only about £2

[Wayne]

Should not need a harness, it will plug straight in.

[jnufcuk]

Just fitted pretty happy with it. Radio is a bit pants but that's what I get for having a stubby Ariel lol

Sounds great, was easy to fit just needed the fascia and Ariel adapter

Thanks guys for the help