Originally Posted by Stang70Fastback
First off, yes you need an electronic flasher unit. It cost me like $12 from superbrightleds.com. It actually has room to slide in nice and snug next to the stock one, so all you need to do is unplug that one and move the plug over to the new one.
Which flasher did you get? Was it the CF18-08
? I have a 97 Legacy wagon.