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One more possibility. I chased a bad vibration for over a year until, almost as a last resort, i checked the spacers I was using on the front wheels. They were only 3/8 or a 1/4 thick, but they were SO BADLY MADE (cheap cast pot metal) that their thickness varied SO much that the wheel had enough run out to cause the vibration. Bought some 1/4 aluminum flat plate, drilled the damn holes myself and TOTALLY solved the steering wheel vibration. Bent or out of round rims can also cause the run out too. Just jack the car up at each wheel, rig up a pencil or something to “just touch” the rim near the edge and rotate the tire and watch the clearance to the pencil tip as the tire goes around. Should be dang near no variation, maybe 0.05 at most. A runout gauge is the best thing to use of course but just as a check you can almost hold your finger there and check.

And it’s not the only Jeep part on my car - lol

Yeah let me find a smaller one tomorrow. Problem is it is right next to the exhaust pipe and there is hardly any room. Also, I think it does explain possibly some smoke i sometimes see in the exhaust at starting. The vacuum hose at the manifold has transmission oil. So the modulator is definitely gone.

Solved! SteveJ you are brilliant. I removed the side lamps to inspect the wiring and they all looked kind of gunky. I sprayed some electrical cleaner on the connectors, brushed them lightly with a toothbrush and let it dry. Plugged them in and VOILA! dash lights, tail lights and side markers all functional. As for the rogue green wire, that had come disconnected from the left front side marker and was a totally separate issue. I'll deal with it another time. Sent from my SM-G990U1 using Tapatalk

The modulator is located on the driver side, about 1/2 way along the transmissions length, down low, just above the pan. It is threaded and just unscrews from the transmission case.

I think the bracket below the moustache bar is part "42" in the fiche "Assy protector member transverse link" (part No. ).

Congrats to @Mike on another year of a big bunch of Z Crazies still posting on this site. Another year of @siteunseen with a new computer.....kind of like giving a loaded .357 to a two year old, @Patcon with 2 projects that may never end......EVER, and @Jeff G 78 adjusting to the Arizona climate, and posting pics of a race car that needs to be eating oats with Secretariat!@Zed Headwill answer all of your questions and 85% will be correct. If you want to solve any electrical problems, the only person to contact is @SteveJhands down. @Captain Obviouswill still swear that flat tops are great......3000 1973 Z owners that switched are wrong lol. @HS30-Hwill poke at you till you finally admit that he is probably the most knowledgeable member ever! @Zupwill once again be the nicest member and @motorman7will continue to rub your nose in a before and after pic of every part of the Z anatomy until you feel like a total failure lol! @EuroDat, @grannyknot,will show up from time to time with some decent stuff and the rest is history. Sorry for all I missed......you all are awesome and Happy New Year to “What did you do to your Z today 2022!” Guy