Hello im looking for a wire whip for kitchenaid k4-bg where can i get one

That is not safe replace the cord.

The wire whips are repairable but only by welding the whip back into place, that can be quite costly, and with new wire whips costing less than $20 that is the more economic solution.

Here is a link to the wire whips made by KitchenAid: Wire Whip MendingShed com Bowls Beaters Attachments

You will want to get your model number from the bottom of the mixer to ensure you get the correct wire whip. If you have trouble finding your model number in the chart be sure to contact us at Repairs Parts Kitchen Store MendingShed com & we will be happy to assit you.

- Colleen @ Mending Shed

Kitchenaid does not make a 4 or 5 quart bowl that would fit your 6 quart mixer, but other 3rd party companies do!
You may be in luck.
I haven't seen this bowl in person, but it apparently will fit your 6qt mixer. Here is a link to a page selling the mentioned attachment. It comes in a set, with appropriate wire-whip attachments:

http://www.chefscatalog.com/product/25686-kitchenaid-3qt-stainless-bowl-and-whip-set.aspx

KitchenAid K45WW Wire Whip Stand Mixers K45WW Kitchen Aid Parts...

Take the four screws off that separate the top of the mixer from the stand,they are just above the handle that locks the bowls up when mixing.once you get the top off you will see where the wires connect to,simply disconnect the wires,remember which colors go where,because when you put the new cord on you will need to know where each color goes,it pretty straight forward,once cord is screwed in,put top of mixer back together and the screws are evenly tight.plug it in and mix away,if there's no power orbit sparks unplug right away and check wires ,to make sure you got in right spot and they are tighten down all the way.

Well you did well for never taking a mixer apart before, the only thing i would say is that you made a serious mistake with the lithium grease. KA uses a food safe grease that will not get anybody sick when it drips into the food being mixed. As to replacing the cord on current mixers (since 1978) all is done right at the rear opening now.

Your Flat Beater, Wire Whip and Dough Hook attachement ends should
look the same. They are inserted onto the beater shaft and held in place
by a single pin. The reason you cannot attach the dough hook to the
beater shaft because it is the wrong hook for your particular model.

Hello Mark,

The problem is at the back of the unit. The speed control (black thing that all of the wires attached) is not functioning properly it has to sets of contactors. You will have to take the back of and play with the contactors. Unplug the unit and adjust the contactors then plug in and try it. You may also want to purchase a new speed control.

The part costs 27.95, part # 1394070 and is located at http://www.repairclinic.com/Kitchenaid-Switch-Parts?z=100&gclid=CKSD5NriuKcCFUVqKgodIE2b_g

A number of attachments were available for the 4C, such as a juicer, a meat grinder, etc., all of which ran off the PTO on the front of the housing.  The only beater, however, was the wire one.  No dough hook was ever made.  I have been told that the motor didn't have the necessary power to run a dough hook.

http://www.marbeck.com/mixers_kitchenaid_beaters.html
Here you can order any and all parts for this machine