Need help on getting front turn signals to work on my 1957 MGA. Ran over metal debris on the road and it cut the wires for my right front wiring. Connect the obvious cut wires but turn signals do not work. Only have two wires competing out of parking/turn signal, how do I connect the ground. Also cannot find the ground on the right front side. I feel the ground is the problem but any other advice is appreciated. Thank you