I have a very nice Whelen Traffic Advisor light bar for sale or trade. It's the same as used by City of Portland, many State Police, and other Goverment vehicles. Great for construction vehicles. Has right, left, split, and flash, high and low. Needs a new cable, but that's only $65. Has bar and controller. Retails for $840 on sirennet.com. Asking $400obo or trade.