Rebel 1 Posted August 13, 2023 Ok, let me go snap a couple of pics right quick. Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 (edited) Here’s a few pictures of my harness it should look just like yours If you look on the small right side connector in the bottom picture, you’ll see a green wire, a black brown wire and a red wire. Those are the ground and two power wires that I was talking about You can also see them in the lower gray plug pictures that I sent The green wire is ground The one on the top right is the brown black which is a power wire and then you can see the red wire down inside, which is the second power wire. Sometimes the red wire has a brown or black tracer on it but it’s the only all red wire let me know what you find Edited August 13, 2023 by AKATV Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 This is straight out of my dash Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 My ATV is a Honda Rancher 2002 TRX 350 FE ES Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 (edited) Edited August 13, 2023 by AKATV Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 Hard to see colors on your picture kinda need white light Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 Yes, I'm working on new pics. Bare with me.... I can't see the last pics you sent. Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 (edited) Look at my previous pictures of my plugs and you should be able to match yours up. You can clearly see the black wire with the brown tracer, the green wire, and the red which is in the middle of the plug also, you’re showing the harness side you need to be looking at the speedometer plug side Edited August 13, 2023 by AKATV Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 Yes, I'm working on new pics. Bare with me.... I can't see the last pics you sent. Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 Where is that small rectangular plug with the black, red and green wire that you show in your pics. I don't have a small rectangular plug like that, or if I do, I'm looking in the wrong place. Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 (edited) The small plug that I was showing use behind the circuit card inside of the speedometer. It’s easier to check on the top side that way. But the wires that you’re showing me inside the harness,m clearly show your red power wire, your black wire with the brown tracer and the green. Those are the ones you need to be checking for power with the key on Edited August 13, 2023 by AKATV Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 11.87 on red wire. 0 on black wire Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 (edited) Is your Key on? Edited August 13, 2023 by AKATV Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 I shall return shortly. Have to run up to AutoZone to get a new volt meter. This one is acting up. Yes key is on. I think it is my volt meter. I'll be back. Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 Make sure you’re checking it on the harness side first before you’re checking it on the speedometer plug side. you want to separate your speedometer plug and check tas well to make sure they don’t have burned pins in them Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 Back again. 11.77 on black. 0 on red. I had it wrong the first time. Checked it twice with new volt meter. Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 I think I've got 11.7 volts on red and black on harness side. It's really hard to see up under there. I probably need to take all the plastics off again to be sure. Should it be volts on red and black? Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 (edited) You should have voltage on the red and the black/brown on the harness side. If you don’t have it on the speedometer side, you need to check the pins in between the two plugs. Edited August 13, 2023 by AKATV Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 I definitely have 11.7 volts on red and black using green as ground. Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 So you have battery voltage on the red wire on the speedometer side of the plug, not just the harness? Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 (edited) I would remove the top cover of your speedometer, and make sure that you have voltages up top at the speedometer circuit card, and if you do, then I would say most likely then you have a defective circuit card. If you have opened your speedometer case already there’s a high possibility that you could also have water damage or some other issue going on with the speedometer’s circuit card Edited August 13, 2023 by AKATV Share this post Link to post Share on other sites
AKATV 846 Posted August 13, 2023 (edited) With that being said, if you put the original ECU in and your speedometer powers up like normal then it’s obviously rerouting the wiring somehow But your speedometer should be able to power up as I do it on the bench all the time, just by putting negative on the green ground wire and positive on the red/black and the black/ brown wires Edited August 13, 2023 by AKATV Share this post Link to post Share on other sites
Rebel 1 Posted August 13, 2023 Well, I took the cover off the speedometer and I do have voltage up there so it looks like I'll be searching for another dash. It does look like it has had water in it before. Thank you for all the help and advice and being patient with me diagnosing this problem. I am electrical illiterate but learning more as I go. Once again, thank you all and I will bookmark this site for future reference, Share this post Link to post Share on other sites