Dim lights on the front of a 05 Grand Marquis
 

hello!
I am working on an 05 Mercury Grand Marquis have replaced the LCM and the multifunction switch everything is functioning but with the parking lights and the headlights on everything goes quite dim only in the front and the turn signals are no longer visible. With the headlights and parking lights off flashers are then visible. high beams seem unaffected. even with a full charge on the battery I am still only reading about 8 to 10 volts at the parking lights. I've also attempted bypassing the ground directly to battery to no avail. I'm not sure on where the 12vdc comes from for the LCM to power the lighting or if possibly there's an issue with the headlight switch. I have searched and searched the internet and no one seems to have had a similar issue. Rear lights and side markers light perfectly any advice would be greatly appreciated!
thanks for the time!