After taking the merc to the local dmv, and waiting several hours, only to have the inspection official fail the inspection twice because he couldn't see the vin#, I regrouped. I made sure the vin number was visible, checked and double checked all the other items I knew would come up, and paid the money for an officer to come to my home today for the third attempt. Vin number, check. wipers, check, headlights, taillights, horn, check. I was starting to think I was home free! I was imagining an early morning fathers day cruise and then. it happened. "Touch the brake" said the officer, and I did, and nothing. The officer failed me, and disappeared. "Call us back when this is fixed and we will try again he shouted on his way down the driveway". When he left, I am sure I looked like Clark Griswold struggling with his schematic. "I checked everything"... I need some advice from the old ford, Lincoln, mercury crew here. If the car is just sitting, either with the engine running, or not. The brake lights illuminate when the pedal is touched. If I flip the switch and turn the taillights on and touch the brake, there is no visible difference in the brightness of the tail light. This is of course a 6 volt system, with no updates. My question to you guys and gals is, should there be a visible difference? and if there should, where do I begin? My thanks to you for your continued patience with me during this process. I'm eager to learn, and appreciate any help.