Take the 134 conversion kit (I call them suicide kits) back to the store and get your money back.

134 prices are taking a big hike this year, while R12 prices are coming down. In the long term you will cause many problems for yourself by doing a blind conversion with one of these kits. Even doing a correct conversion including changing the r/d, flushing the system, doing o-rings and evacuation will cost MUCH more than simply doing it correctly with R12.

This is not to mention the fact that even a PROPERLY done 134 conversion will result in a 15% loss in cooling capacity.

If you want to know more you can do a search. There have been untold volumes written here on this subject.

Good luck,