aaron_h Posted June 23, 2011 Author Share Posted June 23, 2011 Nice This is a good way of increasing the mileage without opening the case, at that speed even quite substantial increases should only take a few days A nice mod if you can do it to the code would be to only run for a certain number of pulses, but I'm not sure if the PIC can deal with counters of the required size easily. It would save having to remember to stop it and prevent you overshooting your target Best just go check i switched it off before i go to sleep. its only got to go to 97000. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted June 24, 2011 Share Posted June 24, 2011 Marvellous stuff Gentlemen, marvellous ! May I congratulate you on your progress so far I get as far as the water analogy with electrics (I had to have a lesson in resisters before adding them when we were learning to get the TD5 temperature gauge to work) so this electronics stuff is deeeeeeeeep ! Bravo ! Wish I could help. Mo Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 24, 2011 Share Posted June 24, 2011 Best just go check i switched it off before i go to sleep. its only got to go to 97000. Lol, when I watched that video I thought 'that's going 10 times faster than I managed it, how's he done that?' I started timing the speed of increase, was just about to do the calculations when I noticed that of course your mileage is below 100,000 so still has the decimal point! Doh! Looks like you have about 4 hours 6 hours left to reach your target, looking good and great idea to post the video, gives a much greater sense of speed than words do. Quote Link to comment Share on other sites More sharing options...
western Posted June 25, 2011 Share Posted June 25, 2011 I'll take it out of the truck over the weekend & have a good look, it didn't look tampered with when I got it back. pulled my speedo out to have a look at the rim it has been removed/refitted to adjust the mileage reading, it was nearly 4 years ago.you can see the recrimping of the rim on my photo below the only label on the outside of the casing is shown below, says my speedo is a 99 model year with a date of Jan 2001 [01/01] Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted June 25, 2011 Share Posted June 25, 2011 Looks like that's the way it is done then. Un-crimping, changing the values with a reader and that 8-way IC test clip (or something similar), then putting back together would easily be doable in less than an hour. I think that'll be the way to go with the DIY approach, even if the 3-pin port turns out to be usable for the purpose, you'd likely still have to take the casing off to get to it and the only benefit is you wouldn't need the IC test clip. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 25, 2011 Share Posted June 25, 2011 pulled my speedo out to have a look at the rim it has been removed/refitted to adjust the mileage reading, it was nearly 4 years ago.you can see the recrimping of the rim on my photo below the only label on the outside of the casing is shown below, says my speedo is a 99 model year with a date of Jan 2001 [01/01] Thanks for doing that Ralph It would be easy to miss the recrimping if the O ring was pushed back up against it. Hopefully next week we'll get to try out a cheap reader/writer for the memory chip and then we should be in a position to start writing a how to for anyone interested in changing the mileage for themselves or doing their own research on the rest of the eeprom . We can also do more research about other configurable bits if I manage to get that KMH speedo off of ebay. Thanks again Quote Link to comment Share on other sites More sharing options...
western Posted June 25, 2011 Share Posted June 25, 2011 well done on the kmh speedo acquire looking forward to the next installment. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 25, 2011 Share Posted June 25, 2011 well done on the kmh speedo acquire looking forward to the next installment. Haven't won it yet! I'm hoping to win it .... fingers crossed Quote Link to comment Share on other sites More sharing options...
western Posted June 25, 2011 Share Posted June 25, 2011 just found it, good luck, hope your successful, I see it's not dual marked like the UK mph version. Quote Link to comment Share on other sites More sharing options...
aaron_h Posted June 28, 2011 Author Share Posted June 28, 2011 If you connect the Brown / Blue wire to 12v and the pink wire to earth this is what the alarm LED looks like. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted June 28, 2011 Share Posted June 28, 2011 I used the red led in my last 90's speedo as the warning light for the winch power supply on via a relay Mo Quote Link to comment Share on other sites More sharing options...
Quagmire Posted June 28, 2011 Share Posted June 28, 2011 I might go all blinging and use mine as a rev-limit light... Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 28, 2011 Share Posted June 28, 2011 I didn't think a KMH speedo would be worth much in the UK but it's already hit £51 http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170658501435 Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted June 28, 2011 Share Posted June 28, 2011 There's quite an export market, so that would be what's driving things like that I'd assume. Quote Link to comment Share on other sites More sharing options...
dailysleaze Posted June 28, 2011 Share Posted June 28, 2011 The last one I saw on eBay went for over £100. They're like hen's teeth covered in rocking horse poo (at least in the UK) because they're from ROW vehicles. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 28, 2011 Share Posted June 28, 2011 Bugger and we only need it for 30 minutes. I wonder if there will be any at one of the shows? Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 28, 2011 Share Posted June 28, 2011 Lol The rocking horse has dropped it's guts! 4 kmh speedos on ebay at £50 buy it now Collect only from Maidenhead ... bit far but doable Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 28, 2011 Share Posted June 28, 2011 They are PRC7375 of LHD pumas .... are they the same? I think that part number is wrong http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=180688543423 Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted June 28, 2011 Share Posted June 28, 2011 PRC7375 is the old mechanical KM/h speedo, like this: http://www.thexmod.com/item_detail.asp?id=5610 The one in the eBay listing looks like a Td5-style one to me, the Pumas have a different arrangement I believe. Out of a D3 perhaps, if I remember correctly? Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 28, 2011 Share Posted June 28, 2011 So looks like it's worth a go then? Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted June 28, 2011 Share Posted June 28, 2011 As long as what they're selling is what they've got a photo of, rather than what they've described, then yes. I'd say so Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 28, 2011 Share Posted June 28, 2011 Well title says TD5, Picture is TD5 and description says electronic and as I have to collect in person I'll just not buy it if they are wrong. We have now bought (hopefully) a TD5 KMH speedo, will collect later in the week and then the project can continue!!!! :D Quote Link to comment Share on other sites More sharing options...
dailysleaze Posted June 28, 2011 Share Posted June 28, 2011 Lol The rocking horse has dropped it's guts! 4 kmh speedos on ebay at £50 buy it now Collect only from Maidenhead ... bit far but doable Christ, I haven't seen one for 9 months. They're like London buses... it went for £57. I half wonder if businesses poll the forums to see what's in demand when someone posts a new modification guide. I've been to Berkshire LR and they do lots of work with ROW vehicles adapting them for the States, so those speedos are probably legit. Either they don't know what they are or they're lying with regard to being from a puma. Quote Link to comment Share on other sites More sharing options...
dailysleaze Posted June 28, 2011 Share Posted June 28, 2011 Either they don't know what they are or they're lying with regard to being from a puma. Probably an honest error seeing as they've got another listing for an actual puma dash: My link Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted June 28, 2011 Share Posted June 28, 2011 Probably an honest error seeing as they've got another listing for an actual puma dash: My link I reckon they just haven't updated the text when copying from another listing, but as I get to pick up in person at least I can make sure it's the right thing. I'll give them a call before I do the 100 mile round trip Quote Link to comment Share on other sites More sharing options...
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