Audio Systems: installing a radio, light buld, infinity gold

Question
thank u ... they both have the same kind of holes 2 square one round and then what i would say is a ground.. but i really have no clue the only difference is the one in the van the suare are top bottom and on ethe new one they are next to each other.. i was going to take the one out of the van but i wanted to ask should i discontect the batterie to the car or take out a fuse or anything(i am deathly afraid of being shocked i hate to screw in a light buld with out unplugging the object :) but im a cheapscate before im afraid ..





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Followup To
Question -
I have a 88 dodge caravan and when i bought it the radio was blown . well i bought another one  but i dont know if i can put it into my van it comes from chrysler and looks to be the same size but i can not find a date it was made to find out if it will fit into my van .. i was going to unhook my other one and see if this one would hook up but i know nothing about radios so i dont know if i would have to cut somthing or if i have to have things turned off if i would need to get anything from a dealer  etc.. how do i know if this one will fit into my van .. i found your web site by chance and liked what i saw an fig i would give it a chance before i have to spend a whole lot of money for somthing i can get help and pos do myself.. thank you marcia .. ps i know the make of the radio in my van is a chrysler  and the model of the one i am trying to put in is a chrysler, infinity gold  model # 5269480
Answer -
marcia,
The only true way of knowing if the new (replacement) stereo will fit/work is to look at the connector/s on each stereo. If the jacks on the stereos are the same then the new stereo should work ok!

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net

Answer
marcia,
If the plugs and connectors are the same size and color you should be able to simply plug in the new stereo. don't worry about getting a shock, you shouldn't with the 12 volt supply. be sure to connect the ground cable and to plug in the antenna wire.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net