go to this site:: http://jmproducts.com/

They sell high quality wire in whatever lengths,color, size you want, real reasonable, first quality (made in USA!)

You really do not want/need to use teflon insulated stuff in your car. MBZ used cheaply made 'biodegradeable' wiring that did not have enough anti-oxidant in it and it failed in service in hot areas in the engine compartment and hot climates.