Hi, I have a 98 vw passat, recently replaced rear left brake light with a 7506 bulb, which i found out only functioned as a brake light instead of the dual running ligt and brake, so i bought a dual lightbulb but once again only functions as a brake. A couple of days later i boosted a friends car and my front left signal and running light went out (same lightbulb?) and when i signal left the blinker blinks very fast as apposed to signaling right which is normal speed. Do these events all tie in together somehow or is this just a simple fix. ALSO, i tried using the rear right side dual brake light, which is workin fine, on the left and it only functioned as a break light only, so something with the connection?