Hi I'm shane, yesterday I was driving my car down the rd then the car was jumping and all the petrol gauge and the speed gauge was going all funny and the car stop, I turn the key to see if it will start, it wants to start but it won't kick over, the relay was buzzing so I thought it was that as it shouldn't buzz and I brought a new one and the new one is buzzing so it can't be that, it's defo the electrics but I don't know wat to do to fix it, can u help please