Rear decklid ground strap, grounded to where?

[Nickm]

So... stupid question... but, where would the deckled ground straps for a 1971 911
ground to, underneath the hinge area? Would it ground to the bolt for the decklid
hinge?
Sorry for the upload placing the photos sideways.

[Longballa]

Yes, and you only need them if you have a radio. I always thought it was a strange idea to have 2 of them on the rear deck lid just for radio use.

[Nickm]

That's what I've heard.

Yes, and you only need them if you have a radio. I always thought it was a strange idea to have 2 of them on the rear deck lid just for radio use.

[ejboyd5]

My '69 does not have any such additional grounding along the hinge not withstanding a factory installed radio. Rightly or wrongly I always believed sufficient ground was provided through the license plate lights.

[dirk07]

Only cars that came with a radio, an antenna and radio preparation or the noise suppression kit had the two straps for the decklid and two condensers for the voltage regulator on the electric board.

[66S]

I found them on my 70, thought it was weird.

[ejboyd5]

For the '69 through '73 cars, options M440 and M441 were for the manual and power antennas, respectively, both with "noise suppression." Options M449 through M460 covered the various available radios along with a note, "(M449-460 come with retractable antenna left, loudspeaker, noise suppression)."

A prior Accessory List for 1969 offered: "9434 Radio Suppression Kit, 912 (standard with radios)" and "9435 Radio Suppression Kit, 911, T, E, S (standard with radios)." Either choice was offered at $11.39 ex factory or $20.00 Importer's Suggested Retail Price.

From observation, it appears that many (most) U.S. dealer installed radios and antennas never had the noise suppression bits added.