Can someone please tell me where all the grounds in the engine bay should be located.. I have a 2000 Ford Mustang gt. 4.6l. Swapped in a new motor but I'm missing a ground to be connected somewhere in the lower part of the engine.

 

You can put as many grounds in as you'd like. Extras won't hurt anything. Your just trying to ground everything together.... Mainly engine to frame/body.

I'm old school so I don't think it should be any different on the newer cars.

 

There should be a ground cable located behind the drivers side front tire that connects to the engine. its located on the underside of the frame. just check under the big wire harness under the battery. That is the only one I know of besides the ground on the starter. starter is grounded to the motor, motor is grounded to the frame. without the ground to the frame. the car will not start.

You dont need a bunch of grounds. just a good one.