Trouble shooting light isues

[larrybarone]

Boy am i going crazy trying to get the lights to work on my 84 Pininfarina Azzura. Headlights work ok. No signals and parking lights, bulbs look ok but find it hard to believe that many would be bad anyway. The rear lights are all on the circuit board assy and some of the socket connections that receive the bulbs look corroded. Any suggestions on how to trouble shoot the light issues.

[dmwhiteoak]

Take a multimeter and check your voltage at the light sockets. That way you will know which direction to head.Had the same problem with mine. Weak connection at fuse box and corroded sockets.Not a hard fix but need to find the source of the problem. Check the ground at the tail lights.

[124JOE]

ok ill ask have you gone over the grounds?
up near the headlights theres a bunch of black wires going to them on both sides
go thru them one by one
have some dielectric grease"for bulbs"
and wipe down the tabs and the conections
and leave a little on there

if you have done them all and still have issues
pull the hazzard switch and do the same

[larrybarone]

All the grounds seem ok. Did this model have a power antenna? There are two wires with connectors just under the rear driver side trunk fender not connected .one comes from the taillight harness and the other comes from the front.

[124JOE]

All the grounds seem ok. Did this model have a power antenna? There are two wires with connectors just under the rear driver side trunk fender not connected .one comes from the taillight harness and the other comes from the front.

i have 2 wires in my trunk also
IDK if they are for power antenna
i just left them alone

[TX82FIAT]

There is a pretty important ground wire in the trunk as well on the drivers side by the wheel well.

[larrybarone]

How do I check ground connections with a multimeter.

[tartan18]

I also have a grounding issue with my 1975. Everything was working before I re-installed my dash board this afternoon so I know the problem is in the dash, center console or perhaps the fuse panel. Does anyone have an idea of where under the dash the grounds are located? I know about the ones that terminate at the hazard relay --- all were cleaned and now have dielectric grease. Where are other places to check under the dash?

Larry -- Using a multimeter in the ohm (resistance) setting put one probe on a chassis ground point (any bolt that screws into your car's frame) and the other probe on where a ground wire that you want to test to conductivity. Zero ohms mean that the wire does connect to your car's ground (the frame). If your meter doesn't deflect (analog) or register a change in reading (digital) then you know that wire is not finding a solid ground. My meter has a setting that simply makes a tone if the ground wire does connect with the frame -- that makes it quick and easy to locate a break or corroded terminal. I hope this explanation is clearer than mud.

[tartan18]

Success! I located the missing ground in the center console. Thankfully that meant that I didn't have to take the whole dash apart.

[larrybarone]

I have the seat belts disconnected and i believe there is an electrical connection for the seat belt light under the belt bolted to the chassis. Would this have anything to do with the lighting issue? I do have a 3 parking lights working,pass rear,pass front and driver side fender light.