General consensus is 1968 -- when a slew of new Federal regulations went into force. Here is a post from valiant.org from Chris North, who used to be a member here: ----------------------------------- On a 1965 Valiant, the parking lights are supposed to go out when the headlights are turned on. Up until 1968, it was standard for the parking lights on US cars to go off when the headlights were turned on (in 68, a whole slew of regulations on lights were enacted). Prior to 1968, although it was not required that the parking lights go out when the headlights were turned on, it was the general rule. The Plymouth Barracuda broke that rule. There may have been other cars that did the same, I do not know. The early Barracuda had a special dash wiring harness that put a jumper between the tail light terminal and the parking light terminal on the plug that attaches to the headlight switch. This made the parking lights stay on when the headlights were turned on. The easiest way to get this modified for your valiant is to remove the headlight switch and solder a jumper wire between the "P" and "R" terminals on your headlight switch. I ran into this problem when I had to swap out the dash wiring harness on my 65 Barracuda (it had been "modified" by a previous owner). I got a dash harness out of a 65 Valiant and found out that the parking lights no longer stayed on when the head lights were turned on. I spent several hours of swapping harnesses trying to figure out what the problem was. ----------------------------------- bschleic57@ wrote: > Imagine trying to explain to a 21 year old that the horn on a 56 > Plymouth turns off with the key, that there are VENT WINDOWS on all four > doors or that the little lights under the headlights are called parking > lights, not marker lights.? > > BTW I'm? pretty?sure that both my 67 Satellite and 69 Charger did not > light the parking lights when the headlights were on...I believe that > innovation took place in the early Seventies.? Like my 73 Torino driver > training car did have them. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.