They all should be attached to a wiring harness un less your install a radio then not all wires will be attached to the after market harness in most cases the wires that are not attached can be used to hook up subwoofers
It should be right above your oil filter. It's a grey plastic part with an electrical connector attached to it. Good luck!
should be right in front of the battery. The two hard lines on the plenum and one connecting it to the egr valve. Also there should be a black connector coming off your EFI harness attached to it
There are different shops, either online or locally that you can visit to purchase such radios. Auto racing is quite a large industry so there should definitely be a large selection of radios for sale.
Most clock radios don't come with adapter for foreign countries but converted adapters can easily be purchased separately that should work will almost all clock radios.
Two way radios should be set at the same frequency. Then, 2 or more persons can communicate with each other via those radios, by pressing buttons and speaking.
20- pin connector
I would say yes, in fact the engine you are removing SHOULD have one since it is a 2000, the wiring harness should already have the connector attached.
attached are the reports
replace the connector
Check the range that the 2-way radios can operate in. If longer distances are maintained between the radios, opt for the radios with the highest operating range. Also, you should look for estimated battery life. Make sure that the batteries can last long enough or not require too many changes during your planned activities.
The 1995 vehicle should be ODB I. The OBD I connector should be under the hood in the engine compartment.
Should be unless it is some micro-miniature thing that is (shot-welded) at the factory and not intended for repairs by changing defective parts- rather like calculators and some forms of transistor radios using printed micro-circuits.