Electrical
Anything about the electrical system on a Zcar.
3,451 topics in this forum
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I hope to make this a Sticky (Mike!!) I want to Document every S30 style combo and Turn Signal Switch. I need every one to see what is already posted and add to this Thread if you don't see your style of switches. With any luck, anyone can pick up a switch out of a box of parts and be able to cross reference it here and know exactly what they have. I am now in possesion of over 80+ switches that I would like to start rebuilding for people and customers. Only problem is that there are so many styles that I am not totally sure of what is what. So PLEASE remove 4 screws from the steering column cover, take off the top and bottom covers and......... Take a picture of....…
Last reply by HusseinHolland, -
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Nice Beepers! 1 2
by SteveJ- 4 followers
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I cracked the code on the horns. I was working on getting @Tirnipgreen's re-plated horns working. I tinkered with them some a while back, but I needed some time to focus on them to get the bugs out. Fortunately I had one of my old 260Z horns that was unmolested to use as a template. Before I go into detail, let's talk about the theory of operation. When you press the horn button, the relay sends voltage to the horn. The coil in the horn is energized, pulling the diaphragm in. The bar on the back side of the diaphragm hits a tab on a set of contacts on the negative side of the coil, de-energizing the coil. The diaphragm snaps back i…
Last reply by Parman, -
- 3 followers
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Hello everyone At the beginning of November I started the restoration of my 76' 280z. The body is currently getting fixed and painted, engine is being rebuilt and I took on the task of rewiring the dash for the new gauges. My plan is to use the wires required from the original dash harness while getting rid of the ones I don't. Here is where the problem(s) start. I have a FSM and a colored wiring diagram but to be honest I'm having a hard time figuring out what wire does what. I started with the speedometer, which in the FSM states has 7 wires (one spare pin). Mine has all eight used. The connector pins out as follows: The connector is as follows: …
Last reply by Pomorza, -
- 1 follower
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So, since I'm between shows, I figured I'd get a little bit of tiny bits dealt with. I figured I'd do the combination switch. Everything was going fine, got all the plastic cleaned up and polished, cleaned up the contacts on the headlight/wipers/washer side, and then an issue popped up. The washer button is sitting too deep into the wiper section. I looked at the video I took while disassembling it (I figured I forget easily so I might as well) and I can't see anything that would cause such a thing. I thought I'd compare the rod for the washer button and the tube for the washer handle to see if there was a difference in length and it looks like the washer button sit…
Last reply by LorenB667, -
- 1 reply
- 306 views
I was recently gifted with a box of S30 antennas and associated parts. I hope to refurb them and get them in the hands of new owners. Of three antennas with mast bases, one is marked Harada and the other two have no branding whatsoever. The branded and non-branded units appear to be virtually identical in all respects, except for branding. Both have what might be a date stamp. My question to the group is: did Harada produce non-branded antennas or was there another manufacturer involved building identical but unbranded units, perhaps under license from Harada?
Last reply by DatsunZGuy, -
- 3 followers
- 4 replies
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Last reply by CanTechZ, -
- 6 followers
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Hey Everyone, I just replaced the stock distributor in my 11/70 240Z with a new 123Ignition unit along with a new Bosch coil. The car now runs great, but the tachometer no longer works. When the engine first turns on the tach jumps up a little bit, but then slams back down to 0 and stays there. Anyone have any advice on what I screwed up? Here's how things are hooked up currently (see image below for my wire numbering): [Black] The black wire going to the 123Ignition unit is connected to the coil negative [Black] There's another black mystery wire that was hooked up to the old coil negative, so I hooked it up to the same place on the new …
Last reply by Zed Head, -
- 1 follower
- 0 replies
- 178 views
Hello, just want to share my today's experience - maybe someone can benefit from it. I recently had a heat problem with my combo switch connector so I replaced it and also had a go at refurbishing my T/S and combo switch. Everything worked fine and I was able to use my headlights again (one day I will add some relays there). Some weeks later I noticed that the voltmeter was behaving strangely. It was jumping up and down and then suddenly stopped doing anything. I checked the wiring diagram and saw that the hazards are also involved in that circuit and that the hazard fuse was blown. So I put a new one in and it immediatelly went up in smoke. After ripping apart…
Last reply by Johnny280, -
- 3 followers
- 8 replies
- 630 views
I'm working on the map light in my 73 240z. The one in there was working but not now. It may be a replacement housing as the 2 wires (red & black) are spliced in. I am going to replace the bulb but the more I look at it the more questions I have. Does the map light have continuous power going to it through the red wire? Does it have its own line fuse? Mine does not have any power in the line even if I have the key on or lights on. Is the housing supposed to be black? Mine is white. Thanks!
Last reply by Richie G, -
- 1 follower
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- 594 views
I recently visited with @inline6 to see if I could help him with an issue with his wiper motor. Though we thought we fixed it, my meter readings said we still had a problem. It turned out to be a self-inflicted issue that @Captain Obvious helped me to understand. Thanks to @inline6 finding an old thread (linked below) and @Captain Obvious getting me to focus on the diagram in the FSM, I was able to develop a better understanding of how the wiper circuit works. I hope I can convey it clearly in this thread. Anyway, here is the thread @inline6 found: Page BE-17 of the 72 FSM shows the wiper circuit, but it is confusing because it is a challenge to relate the diag…
Last reply by SteveJ, -
- 1 follower
- 7 replies
- 801 views
Can anyone recommend a turn signal rebuilding service? I would try it myself since there is lots of information here, but I am limited to one hand for the next 8-10 mths due to surgery.
Last reply by GregP, -
- 3 followers
- 8 replies
- 570 views
Can anyone identify what this is and the purpose? 1973 240z-See photos. It's attached to the console under the dash near gas pedal. It has three prongs out the back. There is a three prong plug that may go to it, as it's just sitting there unattached for at least ten yrs. Wires are 2 black and one green. There was a dealer installed Ac that was removed and an aftermarket radio that PO had installed and butchered the wires. I have been slowly fixing them.
Last reply by GregP,
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