Bad ground wire - Headlight relay and turn signal flasher

Frankly I don't think there's any benefit of tracing the wire to find the fault. It is, after all, just a ground wire. Now if it were power........ When I first bought my car I found sections of the iginition wire with all the insulation melted off.

The ground wire (black) go "all" to a central point (bold on) under the dashboard. The point is very much up close to the windsheeld glas. Hard to get to when dash is in place.

Take your first option, the relais panel has think 4 screws going to main chassis.

If your panel has connectors you might check them for the missing ground due to corrosion.

Thanks all.  I will go with the additional ground for now.  If I take the dash off then I will try to find the root cause of the failure and it will likely be the central ground post inside the dash.

If this is the ground post of interest, it's accessible from crawling under the dash on driver side. Photo taken before I cleaned up the post and anything attached to it. If there's another ground post, I'd definitely like to know where it is to clean it up before I have a grounding problem.

Anybody know what that canister that's grounded to the bolt does? Maybe key in ignition warning or other buzzer?

as typical for Pantera there are probably different driver side panels. In my case the 2 buzzer are part of it. So assume in your case one of the buzzer is missing on the panel.

@matg posted:

as typical for Pantera there are probably different driver side panels. In my case the 2 buzzer are part of it. So assume in your case one of the buzzer is missing on the panel.

No driver side panel on my '72 Pantera 3336.  Like the first photo in this post, only this panel on passenger side that is tucked horizontally under the dash right behind the HVAC blower. Appears to be one buzzer mounted on this panel, and the other buzzer mounted under the dash on the grounding stud near the speedometer as shown in my post above.

This is the passenger seat belt warning buzzer. On my ´72 Pantera it is installed in the same place. The key in ignition warning buzzer is on the relay panel on the passenger side.

BTW - the electrical diagram for the late pre-L on Panteraplace calls the buzzer "seat belt warning buzzer relay" and the seat belt warning lamp "seat belt warning buzzer".

see pantera is always some surprise mine is 4907 (EURO GTS) well production is 12 /1972 !!!

all good we got it