SteveJ

I ordered a set, too. It takes a little pressure to push them through the hole, but it's not very snug. On the other hand, I think they may stay in place better than some other wedge socket swaps I have done in the past.

A loose connection could have caused issues. How and where were the meter leads connected to the electrical system in your video. The meter certainly was jumping around. You may want to test without video to see what the voltage is. I did see it popping up to a little over 14, so if it is staying in that range, that should be good. I'm wondering if the ammeter is off or if you really are pumping out as much current as it's reading. It's not a precision gauge, but that looked to be around 20A, maybe more. I would expect to see that if there are a lot of loads on the battery side of the ammeter (I'm still curious about that red wire.), or a battery that is going south or had been greatly discharged. You may want to put the battery on a charger for a few hours and pull the fuse on the red wire. Then see if the ammeter is still reading like that.

@SteveJ It's like going into Wisconsin. @Captain Obvious Well I got the $#!+ kicked out of me in Wisconsin once. Forget it!

Third day in a row taking the car out. Only 4 Zs showed up, including mine. That could be from ZNationals happening yesterday. Then there was this unique vehicle. I'm not used to taking car photos in portrait mode.

I was over there a while back, but I don't recall if I looked at them. @Yarb did you?

I have used wedge (194) sockets to replace bulb sockets in my 260Z. These aren't the ones I used, but I think they may do a good job of staying where you need them: https://www.amazon.com/uxcell-Wedge-Light-Instrument-Socket/dp/B00W8W5MR4

Today I was celebrating the birthday of a brother from a different mother. He also happens to be a Z enthusiast. Every car in that photo except for my 260Z and the 280Z between my car and the Roadster is his. Plus he still has the 240Z he bought from Redwing (Jai) in his garage waiting to be reassembled. Since it was his birthday, I got the horns and speedometer working in his Roadster. He swapped a 240Z for the Roadster. The Roadster has a 2.4L turbo engine in it. Unfortunately, the wiring looks like it was done by a body guy, and the body looks like it was done by an electrical guy. I've been helping him sort out electrical gremlins and install better connectors. He's done a lot of work on my 260Z in the past, so I'm just returning in-kind. A few other Zs showed up along with a 240SX and a G60. There was even a 65 Mustang 2+2 and a 1st gen Camaro SS on hand. There was one strange guy there who was saying something about needing to go to Czechoslovakia to rescue his platoon as he left.

Those are beautiful sounds.

Auto AC Solutions

Nostalgic AC is about an hour and a half from you in Ocala.

Great question, sir. What's happening at this point is that the bar on the diaphragm is not opening the contacts. Before you disassemble, connect your ohmmeter to the horn and tighten the volume screw slowly until the resistance goes up. Then back it down some. Test again and see if the bar can open the contacts.

I looked at the dimensions in front of the radiator. It looks like this condenser would probably work best: https://nostalgicac.com/parallel-flow-condensers/14-x-24-superflow-r-134a-condenser.html. Nostalgic AC doesn't offer those dimensions on a condenser with an integrated drier.

Are you referring to Nostalgic AC?

Here's how you should check the voltage. Make sure the 6 pin connector is plugged in. Unplug the connector from the alternator. Measure voltage to ground at the red wire and green wire. The red wire should have battery voltage. The green wire should not. If the first test passes, put the key in ON. Measure voltage to ground at both wires again. This time both should have battery voltage. The starter you linked was the one I was referring to. It's difficult to find parts not made in China. After you fix your starter and get ready to run your car again, make sure you measure the voltage while the car is running at the alternator and then check at the battery. I'm starting to think there are some problems lurking in your car that you may need to address. If the voltages are significantly different, that would confirm my suspicions.

Hanging out at Atlanta Motorsports Park north of Atlanta for ZNationals Track Day.

Well guess who has the Frontier alternator. Your alternator is connected properly, too. I just verified against my car. However, the crimped lug on the red wire is curious looking. If I can remember, I will make a video to show you how to verify the wiring. When you say that the wire burned through, are you taking about the wire between the solenoid and starter? If so, look on RockAuto for a 280ZX starter. They have some listed as new.

Here is the deal. As far as I'm concerned, there are gaps between the documentation and reality for the 75. On page EE-14, the manual shows a charge light. Since I've never owned or really worked on a 75, I can't tell if it exists. The 75 should still have an ammeter as far as I know. I don't have a full 75 FSM, so I don't have the BE section to cross-check anything. The parts manual shows an ammeter for the 75. So where would the charge light be? I don't know.

Bad things happen. The alternator won't be getting a battery sense line, so it will crank up the voltage. Starters? I'm not sure about. Frontier refers to Nissan Frontier (from 2004 or earlier). The alternator from the 2.4L version will fit on the Z mounting bracket, and the pulley works with the fan belt. It's not exactly a drop in replacement, but you can get "new" alternators for the Frontier instead of a remanufactured one. You also have to buy a connector to fit the alternator and add a 2-pin connector to that in order to plug into the engine harness. In a properly functioning electrical system, the voltage should be between 13.5 and 14.5 volts with the car running. A bad alternator, voltage regulator, or battery will affect the voltage. I use a clamp DC ammeter along with my multimeter to tell me if it's the charging system or battery. A low voltage and no current output from the alternator says bad charging system. A low voltage and several amps of current tell me it's the battery. The alternator would not cause issues with your starter. The damaged insulation on the conductor between the solenoid and starter indicates that the starter is pulling too much current. The current source would be the battery since the engine isn't turning the alternator at a speed to generate much power during starting. It could indicate insulation failure in the windings of the starter motor.

@RJK Do this. There is a voltage regulator integral to the alternator if you went for an internally regulated alternator. I have done Frontier alternator swaps on several Z cars now because I don't have a lot of faith in rebuilt alternators. The only time I saw a Frontier alternator swap with issues was when someone went with a rebuilt Frontier alternator. (Imagine that.) He bought the alternator I suggested, and his problems stopped.

Yep, and it would make a lot of noise, too.

13.2 V @ 2000 RPM is not good. As suggested earlier, contemplate replacing your voltage regulator. The red wire is not original to the car. You might want to see where that wire goes to. Someone may have "fixed" something only to cause other problems.

Voltage is only one indicator of battery health. First, what is connected to the red wire that is going to the positive terminal on the starter? That load could be part of why your ammeter is behaving the way it is. When the ammeter needle is on the positive side of the gauge, that means current is flowing from the alternator to the battery. After recharging the battery after starting, the only loads that should make the needle move right are the brake lights and horn. Even then, those shouldn't cause much of a deflection in the needle. Other than that mystery load, the needle moving to the right could indicate a failing battery as your alternator keeps pushing current into the battery. It could also indicate an alternator overvoltage condition. If the battery health isn't good, that could cause issues with starting. The issues with the car stalling could be related to improper re-wiring, bad battery, or something else. With the car running at around 2000RPM, what is the voltage at the battery?

Has anybody ever looked at this Beck/Arnley 158-0073? https://www.amazon.com/Beck-Arnley-158-0073-Injection-Pressure/dp/B000CB03EA It came up in a search for L-jetronic fuel pressure regulator. I haven't drilled down enough to see if the specs are available.

If I did my research right, the Toyota Celica Supra & Cressida FPRs should operate around the correct pressure. I was thinking that with the female threaded end you could possibly find a barb that would allow you to connect it to the fuel rail with a short piece of hose.

I'll take a look sometime, but I hadn't registered any issues. Maybe I've just been of the mindset that I enjoy seeing the gauges at night.