Dzimm Posted October 7, 2020 Share Posted October 7, 2020 Does anyone know, do all XJs and MJs have the wiring for the dash clock even if it didn't have it? Also does anyone have a pinout or pictures of the plug? Link to comment Share on other sites More sharing options...
Minuit Posted October 7, 2020 Share Posted October 7, 2020 The clock was eliminated for the 1992 model year. Starting in 92, the clock was part of the radio. 91s have a unique connector and clock. Metri-Pack 150-series 8-pin unsealed. The clock is a green VFD. 87-90 (possibly also '86) clocks are interchangeable, and there were two different types of displays offered. '87s have a vacuum fluorescent display clock that looks very nice and matches the radio for that year. Later models used a backlit LCD clock that's almost impossible to read in any kind of sunlight and has an ugly display. The connector is an 8-pin unsealed Metri-Pack 150, but not the same as the 91 clock. There may be some cross-over with which year got which clock. They will both plug in and work. 84-86 (possibly just to '85) clocks are different again. I am not too familiar with them, but the connectors are different and the clock themselves may also be different. Every MJ I've seen has the connector for the clock, whether it originally had the clock or not. Not sure if '92s have the wiring for the clock. Link to comment Share on other sites More sharing options...
Dzimm Posted October 7, 2020 Author Share Posted October 7, 2020 Thanks! Didn't realize there were so many versions of it. Link to comment Share on other sites More sharing options...
Pete M Posted October 7, 2020 Share Posted October 7, 2020 http://gojeep.willyshotrod.com/HowtoDashClock.htm Link to comment Share on other sites More sharing options...
Minuit Posted October 7, 2020 Share Posted October 7, 2020 There's almost as many clock variations out there as radio variations. One of these days we might have a "what [insert CC member] knows about clocks" article. From personal experience, the LCD clock with the bulb that faces up is awful. Very difficult to read. This is legitimately the best picture I could get of it, and yes the bulb works. The one with the bulb directly behind the display might be better, but I don't have one of those. The '87 VFD clock with "Quartz" printed on the front has a very bright, sharp display. Very nice to look at, and very easy to read. The '91 clock is not quite as nice visually as the '87 clock. For me, this type of display looks best when the digits are sharp and skinny rather than the blurry look this one seems to have on purpose, but it is very readable even in direct sunlight. Of course, since this clock is one of the unique '91 model year features, I really have to have it. I should point out that the Metri-Pack 150 series connectors used by all of the clocks from 87 onward are still readily available for those so inclined. None of these clocks have given me any trouble reliability wise - they're all pretty simply constructed. I have no information on timekeeping accuracy over time. They're all fine, I'm sure. Link to comment Share on other sites More sharing options...
87MJTIM Posted October 7, 2020 Share Posted October 7, 2020 HIJACK! Why do some clocks tend to run fast? Over several weeks/months the time will get ahead of actual time. Every month or so, I have to reset the time. My radio (after market) does keep accurate time. Link to comment Share on other sites More sharing options...
eaglescout526 Posted October 7, 2020 Share Posted October 7, 2020 Probably a resistor or something. I have a clock torn apart and one of the resistors is bad. Link to comment Share on other sites More sharing options...
schardein Posted November 27, 2020 Share Posted November 27, 2020 I know this is somewhat of an old post, but I've got one of every version clock (I think) on hand, if anyone has questions or wants pictures. I've got pinouts on all of them I believe. I really intended to do a clock write up but just haven't gotten around to it. The link that Pete posted is a very good article and I'm not sure what I could add to it. Unfortunately, when I started collecting the clocks at first, I didn't keep track of what they came out of. It's not uncommon to see these clocks listed for sale (eBay, Facebook, craigslist) and the seller will say "85-96" or some variation. That's not correct, and as Jeremy stated, these changed almost every year during MJ production. The good news is in most cases, if you are willing to cut off and replace connectors, you can make any of them work in any year. I also discovered that after thinking the factory wiring was there in all XJs out to 96, that isn't the case. I'm not 100% positive when the vehicle side wiring stopped, but some 95-96 XJs I have looked at don't have it. It would make sense if it stopped in 92 when the clocks were on the radio (as Jeremy said) but of course we are talking about Jeeps here. The most common issue I've seen with these clocks is the "adjustment holes" will jam up and either resist working to adjust time, or prevent the clock from working at all. Maybe that's from rough treatment, or some other cause, but I've only had a handful out of maybe 30 that didn't work. Link to comment Share on other sites More sharing options...
Minuit Posted November 27, 2020 Share Posted November 27, 2020 2 hours ago, schardein said: I know this is somewhat of an old post, but I've got one of every version clock (I think) on hand, if anyone has questions or wants pictures. I've got pinouts on all of them I believe. I really intended to do a clock write up but just haven't gotten around to it. The link that Pete posted is a very good article and I'm not sure what I could add to it. Unfortunately, when I started collecting the clocks at first, I didn't keep track of what they came out of. It's not uncommon to see these clocks listed for sale (eBay, Facebook, craigslist) and the seller will say "85-96" or some variation. That's not correct, and as Jeremy stated, these changed almost every year during MJ production. The good news is in most cases, if you are willing to cut off and replace connectors, you can make any of them work in any year. I also discovered that after thinking the factory wiring was there in all XJs out to 96, that isn't the case. I'm not 100% positive when the vehicle side wiring stopped, but some 95-96 XJs I have looked at don't have it. It would make sense if it stopped in 92 when the clocks were on the radio (as Jeremy said) but of course we are talking about Jeeps here. The most common issue I've seen with these clocks is the "adjustment holes" will jam up and either resist working to adjust time, or prevent the clock from working at all. Maybe that's from rough treatment, or some other cause, but I've only had a handful out of maybe 30 that didn't work. As for the reliability problem with the buttons, i would put my money on the little tactile switches inside. You're usually pushing directly on to them with quite a bit of pressure with a pen or whatever to adjust the clock, and they wear out with use and old age anyway. I run into this fairly often with radios, and I would be surprised if it wasn't a problem with the clocks too. Link to comment Share on other sites More sharing options...
Dzimm Posted November 28, 2020 Author Share Posted November 28, 2020 On 11/26/2020 at 7:40 PM, schardein said: I know this is somewhat of an old post, but I've got one of every version clock (I think) on hand, if anyone has questions or wants pictures. I've got pinouts on all of them I believe. I really intended to do a clock write up but just haven't gotten around to it. The link that Pete posted is a very good article and I'm not sure what I could add to it. Unfortunately, when I started collecting the clocks at first, I didn't keep track of what they came out of. It's not uncommon to see these clocks listed for sale (eBay, Facebook, craigslist) and the seller will say "85-96" or some variation. That's not correct, and as Jeremy stated, these changed almost every year during MJ production. The good news is in most cases, if you are willing to cut off and replace connectors, you can make any of them work in any year. I also discovered that after thinking the factory wiring was there in all XJs out to 96, that isn't the case. I'm not 100% positive when the vehicle side wiring stopped, but some 95-96 XJs I have looked at don't have it. It would make sense if it stopped in 92 when the clocks were on the radio (as Jeremy said) but of course we are talking about Jeeps here. The most common issue I've seen with these clocks is the "adjustment holes" will jam up and either resist working to adjust time, or prevent the clock from working at all. Maybe that's from rough treatment, or some other cause, but I've only had a handful out of maybe 30 that didn't work. Good info here, thanks! I may message you when I get to my clock project to tap into your knowledge a little deeper. Link to comment Share on other sites More sharing options...
Siskiyou Mike Posted December 30, 2020 Share Posted December 30, 2020 I have a 1989 MJ with a very, very dim clock. The buttons advance the hours and minutes, and the clock changes time as it should, but I can only see it in absolute darkness. Can I fix it by putting in a new bulb? If so, someone on here said it required a #74 bulb, but when I look that up I get either a very tiny LED or a quite large LED, and I doubt if they both fit. If I can get a #74 is that my best and brightest option? Thanks Link to comment Share on other sites More sharing options...
87MJTIM Posted December 31, 2020 Share Posted December 31, 2020 I had a similar issue: it would get dim and hard to see, especially in daylight. Often it would just go blank. When it did become visible again it still kept good time. What fixed it? A dash board ground wire upgrade. See cruiser54.com Tip #18. Link to comment Share on other sites More sharing options...
Siskiyou Mike Posted December 31, 2020 Share Posted December 31, 2020 87MJTIM, Thanks for passing along the tip and how to fix. I will give it a try this weekend. Link to comment Share on other sites More sharing options...
MiNi Beast Posted December 31, 2020 Share Posted December 31, 2020 13 minutes ago, Siskiyou Mike said: 87MJTIM, Thanks for passing along the tip and how to fix. I will give it a try this weekend. good luck. Link to comment Share on other sites More sharing options...
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