"We have to be more streetwise and adaptable. You have to play to the referee's strengths," said Howley.
"We weren't streetwise enough in the contact area in the first Test and that is something we are looking at this week. The contact area is the most important area in the game because of turn-overs at the tackle area.
"We weren't as efficient as we should have been in our support systems and we weren't as effective in removing the threats as we should have been. That's something we have to address."
The Brumbies have been the surprise package in the Super 15 this season and are the leading Australian side. But coach Jake White is missing eight players on international duty and has selected a pretty inexperienced side.
Wales have lost twice to the Brumbies in the past and Howley knows all about the potential firepower contained within the home team ranks after playing in a 69-30 defeat in 1996.
"They had a pretty potent back line in 1996 and beat us by 60 odd points. This season they have been a surprise package in the Super 15," said Howley, who score two tries in the game 16 years ago.
"They kick a lot and go to the air a lot, so our back three will have to work hard. But this is an opportunity for these players to play in the national jersey and push their claims for Test places.
"On a lot of tours the midweek side becomes very important in terms of attitude and this group were out training a 9.00am the morning after the first Test. Some of the boys are backing up, but we are confident in our fitness and where we are with this team because they had a game against the Baa-Baas.
"Competition for places has been a big ingredient in our performances of late and we have a good blend of experience with youth in the side."
Cardiff Blues teenage wing Harry Robinson gets another chance to shine after scoring a try on his Test debut against the Barbarians, while at the other end of the experience scale the Ospreys lock Alun Wyn Jones will captain the side.
"In the past we have had depth in the Welsh squad, but not strength in depth. Right across the board we have talent and that bodes well for selection," said Jones.
"It shows the production line from the regional rugby academies is working pretty well. This game on Tuesday is a shop window for all the players, a game in which to put up your hand to try to win another cap."
The Melbourne Rebels skipper Gareth Delve will be among the replacements having replaced the injured Toby Faletau in the tour party. Howley revealed Faletau broke his hand five minutes before he was replaced in the first Test.
"It's the nature of the sport. He did it five minutes before we took him off, but we are lucky to have Gareth on stand by out here in Australia," said Howley.
"We spoke to him four weeks ago to see if he would be available and it means we can replace a No 8 with a No 8. He has been playing well for the Rebels and this is another opportunity for him."
While Faletau is out of the tour and heading home, Howley is confident that his first Test injury victims, wing George North (dead leg) and centre Scott Williams (facial injury), will be fit for selection for this weekend's second Test in Melbourne.
Brumbies: Robbie Coleman; Cam Crawford, Tevita Kuridrani, Andrew Smith, Kimami Sitauti; Zack Holmes, Ian Prior; Ruaidhri Murphy, Anthony Hegarty, Scott Sio, Leon Power, Ben Hand (captain), Peter Kimlin, Colby Faingaa, Ita Vaea
Replacements: Siliva Siliva, Jean-Philippe Pradaud, Dylan Sigg, Fotu Auelua, Beau Mokoputo, Tom Cox, Jesse Mogg
Wales: Liam Williams (Scarlets); Harry Robinson (Cardiff Blues), Andrew Bishop (Ospreys), Ashley Beck (Ospreys), Aled Brew (Dragons); James Hook (Perpignan), Rhys Webb (Ospreys); Paul James (Ospreys), Richard Hibbard (Ospreys), Rhodri Jones (Scarlets), Alun Wyn Jones (Ospreys, captain), Luke Charteris (Dragons), Josh Turnbull (Scarlets), Justin Tipuric (Ospreys), Aaron Shingler (Scarlets)
Replacements: Ken Owens (Scarlets), Rhys Gill (Saracens), Ian Evans (Ospreys), Gareth Delve (Melbourne Rebels), Lloyd Williams (Cardiff Blues), Rhys Priestland(Scarlets), Alex Cuthbert (Cardiff Blues)
Referee: Ian Smith (ARU)