My air conditioner is not working and I am trying to put in some freeon but i am not quite sure with it goes

When u purchase freaon these days from your local parts store its always R134A, which is allowed to be sold to the public.

You are either buying a self install kit or you will have to buy the kit to allow the freon to be inserted into the system.Not knowing what you have bought its hard to help you out. BUT all freon you will purchase goes through the LOW pressurse side of the AC system.

If you have to add freon you are loosing it which means you have a leak.Contamination is something you want to avoid. ALSO your vehicle is PRE 134A so you will need to have a station remove the R12 freon 1st if there is anything left in your system, them install a retro kit, but you will need to purchase some other items to allow this NEW style freon and oil to be able to be accepted.

Sorry alot of info here but you are working with an older car if you have not retrofited it with 134A before you will need to go to a shop that is able to handle the R12 freon 1st.

Good luck