Hi,
The checkout is composed of several views. One general view ( step ) and one view per step action : cart, coupon, address, shipping, etc.
So I think you will want to override the "checkout | cart".
You can read the variable "$this->step" in order to know the step number.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.