Hi Irwin and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, would LINKs to where an electronic copy of the Operation Manual and the Installation Manual for a Pioneer DEH-P3800MP serve your need please?
Hi again Irwin,
Both manuals are in a Portable Document Format (PDF) file and can be viewed in most web browser. Click on the link to open the file or right click then select “Save As…” to download the file. It would require Adobe Acrobat Reader or equivalent for this purpose.