Buzzing from rear fuse box :(

[dazmanz]

Hey peeps... anyone any ideas... just had a towbar fitted all electrics working fine .... heres the thing, i have a buzzing coming from the fuse box until i press the brake then it stops until i depress it and its back again .... all electrics working on the car fine its just the buzzing you can here from the rear fuse box...
Any ideas??

1.9cdti design
vectra c 56
150bhp

[Ademusic]

Could be a dodgy relay. They can make a buzzing sound when they have had it, you'll have to listen in the area when you're stationary and try to hear exactly where the sound is coming from

[axelf]

i have this same noise but only when connected up to the caravan.....and engine switched off

[swstevewil]

I had a similar problem last year except that the buzzing was there continuosly. when I looked at fuse box in boot . I found a wire that had a spade on which was pushed into an empty fuse socket .This wire was loose at the socket i pushed it back in and the buzzing stopped.

[dazmanz]

Thanx for your replys guys... just been in and taken a closer columbo inspection and found where the noise is coming from.. its a black box where all the wires go into from the lights which i think is what the garage fitted with the towbar.... its just its really loud and annoying... grrrrr
Back to the garage tomorrow me thinks as i only just had it fitted...
Thanx for all your advice...