Don't be offended by Chad.

He knows what he is talking about and he is a really nice guy.

The information he gave you is standard Countach Mantra.

CHECK THE GROUNDS,CHECK THE GROUNDS, CHECK THE GROUNDS

They are not always the problem but they are a very good starting point.
(electrical wires attaching to a round tube frame means there is a smaller amount of contact area with which to achieve a good ground)

If the problem persists after you clean the grounds, post what is happening and we will try to help you out.


Good luck.