2000 Dodge Caravan CHANGING A/C CONDENSER

HELPING AN OLDER FRIEND OF MINE,HE NEEDS HIS
CONDESER CHANGES ON HIS TRUCK,AND THE REPAIR SHOPS ARE I THINK ARE TRYING TO RIP HIM OFF,HIS ON A FITTED INCOME AND STRUGGLES.
I TOLD HIM ID DO IT ID FIX FOR HIM,SO TO MAKE A LONG STORY SHORT,COULD YOU SEND ME AN ILLUSTRATION ON HOW TO INSTALL THE CONDESER PLEASE.THANKS.