Haley joins a team that went a franchise-worst 2-14 under coach Herm Edwards , who was fired Jan. 23.
Edwards lost all but two of his final 25 games and launched a rebuilding project that made the Chiefs the league's youngest team this season.
Scott Pioli , hired last month as general manager, said at a news conference that Haley has a "strong understanding of players and the type of players that create championship football teams."
Haley called this an "ideal situation" for him and "a chance to work with someone I have experience with in Scott."
The Chiefs haven't won a postseason game since an aging Joe Montana was their quarterback in the 1993 season.
Edwards was considered a players' coach by the Chiefs. Haley can be combative and sometimes clashes with players. During the NFC Championship Game against the Eagles, he had a first-half argument with quarterback Kurt Warner , then a short blowup in full view of television cameras with wide receiver Anquan Boldin . He also had a spat with Terrell Owens when he was receivers coach in Dallas.
Haley, who turns 42 this month, did not start calling plays until late in the 2007 season. But this season an Arizona offense led by Warner set a franchise record with 427 points, finished third in scoring in the NFL and was second in yards passing.
RAVENS: Informed season-ticket holders in a letter mailed this week that they are increasing ticket prices, which will go up from $5 to $15 per ticket for the 2009 season.
In the letter, the Ravens said they need to raise ticket prices to remain competitive with other NFL teams in terms of player spending.
COURTS: A federal judge sentenced former NFL player Dana Stubblefield to two years' probation for lying to investigators about his steroid use.
U.S. District Judge Susan Illston cited Stub-blefield's later cooperation with authorities in the BALCO steroids case as she declined to sentence him to three months' home confinement, which is what federal probation officials had recommended.