How to connect Roland VG-99 and Fender VG

Hi Victor and Welcome (you and your friend) to the Clan

Let me see if I make this clear:

1 - The Fender VG has a Roland divided GK pickup built in. This pickup is used for the aditional functions of the guitar, meaning, the diferent sounds and tunnings aside from the traditional Fender sound. Althought there is the Roland pickup the guitar itself only has a regular 1/4" jack output - like you said, there is no MIDI.

2 - The Roland VG-99 has a GK input (13-pin) and a 1/4" jack input. If you use the jack input you only have access to the VG-99 effects, like reverb and chorus but **NOT** to the modelling and MIDI functions. To access those you **MUST** use the 13-pin input for the divided GK pickup.

In the end:
Although the Fender guitar has the GK pickup your friend must install another one - the GK-3 - to get the 13-pin connection between the guitar and the VG-99.

See the information about the GK-3 HERE

Hope I cleared it.

Actually this particular Fender Stratocaster comes with a 13 pin midi plug build into the side of it's body.

That is where you plug the midi cord into.

Have fun!

...this particular Fender Stratocaster

I'm sorry but unless this is a custom built Fender VG, there is no 13-pin plug there. That's also the reason for the post. And, also, MIDI does not uses 13-pin but a 5-pin plug so I guess you're talking about a different thing.