VW T4 Broken Aerial Replacement - Volkswagen Transporter Antenna Fix 

Thank you. I decided to stay quiet and let people concentrate on the job at hand.

I am pleased to hear you achieved this repair by watching my video. Well done!

The bracket at the base of the aerial contains a rubber grommet. I tried adding my own earth wire to the aerial as I did have some problems which I thought may have been down to a bad earth. I run a dash camera at the front with a power supply running up the inside of the windscreen, this may be causing some inference. After trying a few different things and still having problems I purchased a DAB+ head unit which comes with its own internally mounted aerial. I really wish I had done this sooner, the quality of the sound is so much better than FM. Only paid £89.00 for the Pioneer head unit with aerial included.

The drain holes below the windscreen drain into the area between the inner and out wing, even if the aerial was not sealed properly it should not be an issue for water to run into the same area. If the sound proofing/insulation is getting wet then it could be that the water is not draining out from the bottom of the inner wing, bearing in mind that this is where anything that flows into the drain holes below windscreen ends up, leaves, moss, twigs etc. Move the sound proofing to one side and reach into the cavity and you will find a kind of mulch which has formed after years of debris gathering. This is usually the main cause of the above part of the wheel arch and outer wing rotting from the inside out. Clean out as much as you can by hand and then use a garden hose to wash out what remains. You should also do this on the other side. You can also open the driver or passenger door and spray water through the gap near the door hinge and into the cavity between the inner and out wing. Once cleared you will be able to see the water flowing freely. I usually do this a couple of times a year, the first time I pulled half a carrier bag of black rotted leaves, twigs, stones out of the drivers side, well worth doing this job once you realise how much debris makes its way into that cavity.