Series wiring?
 

I am going to start using two 2S batteries in series in my 1/8th scale buggy and truggy instead of one 4S battery...can anyone direct me where to get the parallel wiring already made up...

Tower, A main, etc

You will have to wire an extra plug onto the esc with a jumper between the original plug and the new plug.

Reading the title again, I think you mean series charging.

You don't need to do anything to the ESC. This goes between the ESC and 2 2s packs.
http://www.ebay.com/itm/Dean-T-Plug-...item3a7ceb49c1
This is just the first one I came across, but if you are not using Deans, they can be had with any connector.

That's one option, but adds both resistance and extra wire to flop around. Either way both would get the job done though.

Best option is to wire the ESC with two connectors like what you see on the Traxxas eRevo and eMaxx as an example.

If you have inboard 2S packs you can do what I did and just put the bullets on your ESC and make a jumper wire with the bullets on it to bridge them in series (you do not want parallel wiring btw to make a dual 2S into 4S power). Thing with bullets though is you have to wire them at a 90 degree angle to the bullet to fit the tray in most cases for 1:8.

Nice thing about inboards and bullet connectors is that you are in total control of the amount of extra wire flopping around in the chassis.

DTMI is right...I actually meant series wiring not parallel.

series connector , traxxas 3063
Use it as an example of wiring, use whatever connectors you want.
http://www.amain.com/images/medium/tra/tra3063.jpg

Now fixed.