Rear Drivers Side Parking Lamp and Side Marker not working

[searya]

Got my son's fiat all done except a few straggling issues. Right now the rear drivers side parking lamp and side marker do not work. All of the other rear lights work and we have new tail light boards and have confirmed the bulbs are good.

So thinking I am not getting power into the drivers side tail light for the wire that runs those bulbs.

Big problem is I don't know which wire it is. Any ideas on which wire coming into the drivers side tailight board drives the bulbs that are out?

Or if I am off base what else it could be?

https://drive.google.com/file/d/1xpHrIi ... p=drivesdk


Thanks,

Sean

[spider2081]

Pretty sure the left rear and right front parking lights are on fuse 7 . Does the front right side parking light work??
The wire color for the left rear tail light is yellow/red according to the wire diagram I'm loking at.

[scrapironchef]

What year is the car you're working on?

[searya]

It's a 1981.

And you were correct. Fuse 7 was burnt out and my front passenger parking and side lamps were not working. Here's the interesting thing that happens. I went to put in a new fuse and the drivers front side lamp and parking lamp stopped working. The Passenger side lights began working. A few seconds later the fuse blew and the front drivers parking lamp and side lamp began working again. The passenger side front side lamp and parking lamp went out. The drivers side tailight bulb also burnt out when the fuse shorted.

I was wondering if you had any explanations for this.

Thank You,

Sean Ryan

[spider2081]

I would make sure the correct light bulbs are in all the light sockets.
Clean the sockets and bulbs and lightly coat contact surface with coppper anti Seize
I would clean al the fuse holders and fuses then lightly coat the contact surfaces with copper anti seize
Inspect the rear marker plate light wire connections. It's fairly common for the nylon covers for the connections to be missing and the connections intermittently short.