Important! : Few different issues. Help needed please

  1. #1
    Basically i bought my car off a lad who had abused the poor thing luckily most of the problems are now sorted but i still have a few issues and any help at all would be highly appreciated.

    The horn has been re-wired and i cannot locate it from under the steering wheel, there is also a red button under the steering wheel and a switch under the indicator both of which do not do anything :/ also when im driving sometime i smell burning rubber or some kind of burning its not my tyres and its very strong within the car. All advice would be very helpful

    Thank you