Buy the bypass "adapter" from eBay.
Alpine is one of the better you can buy. Clarion is the best.
You can buy a safety harness for work at www.uline.com/Safety-Harness. I would buy these new not used.
Clarion really isn't that good of a CD player there not none to be good Clarion is a very good car audio company It all in what you want to pay if you buy a unit from there basic line you should not expect all the bells and whistles
you have to first unplug the big harness from the stock amp behind the glovebox,buy a required harness to connect to harness that you unplug from amp,you also have to run your new speaker wires from harness you buy because wires are too short.the other harness you can see behind radio--those are hot leads and ground and power antenna,also requires a separate harness kit.your good to go.
when you buy the harness to wire in, the intructions for correct wiring will be on the harness packaging
go to a pet store and buy a rabbit harness that is better for them
You can buy a speaker harness. An adapter that connect the positive and negative from the speaker into the stock harness.
buy the correct harness with factory plugs and plug into the existing taillight harness located up under the rear bumper. most any autoparts store sells it for about 20 dollars
if your smart you will go ahead and buy the adapter kit it makes things a lot easier and faster
u can buy one at the auto parts store and they plug into the tail light harness usually buy unpluging it and pluging in the harness
If Available you buy the correct Wiring Harness.