Nock

I installed my GPS receiver in the same location today. There was no X cut in my grommet though, so I took the grommet out, fed the wire through and then put the grommet back. I was 50:50 on whether to do this or cut a hole in it but decided on this method in the end. Hopefully, my sat nav will be a lot more reliable now, as installing the receiver in the passenger footwell proved a little ropey sometimes (presumably because of all the metal between the footwell and the sky).