Dujo Posted July 7, 2012 Share Posted July 7, 2012 So, I'm playing around under the dash (2005 LGT) with the fuse panel and some Prosport gauges. I've seen several threads about how to wire gauges and I still don't have this quite right. I will be running gauges on the left of the driver and as such, I feel the closest easiest (not to mention cleanest) method is to run them directly off the fuse panel with some fuse taps. Therefore, I'm not particularly interested in using a vampire tap near the cigarette lighter or some such other nonsense that doesn't make sense with this setup. I have see a few mentions that say not to use more than 10 amps in the fuse taps and the ones I have even say 2 - 10 amps on the package. So, while I have seen a few options on where to place things, I'm trying to also keep the fuses that I tap as well as the fuses I use in the tap are all under 10A. Again these are Prosport Halo gauges that have a - red (constant power) - white (accessory power) - orange (powered when heads and/or tails are on) - black (ground) wiring harness. I have the ground hooked up to the bolt holding the hood release lever up under the dash. The options I have found for the red wire include: #7 Unit +B (15A) #10 D-Op +B (7.5A) I chose #10 D-Op +B since it's under 10A. The options I have found for the white wire include: #16 ILM (15A) #26 IG1 (15A) #31 ACC (7.5A) #33 Unit IG2 (7.5A) Again, I chose #33 Unit IG2 since it's under 10A. Finally, we have the orange wire, which is the one I think that I don't have right. The only option I found suggested anywhere for the orange wire in the LGT fuse panel is #31 ACC (7.5A). I used a Volt gauge to test the setup. When I turn the key over, I seem to have the correct power and operation. I have the sweep in the exact right timing with the dashboard sweep. I can use all of the programming functions on the gauge using the touchpad attachment. The only thing I don't seem to have working correctly is the nighttime color switch when I turn on the headlights. This means the orange wire is not hooked up correctly. The orange wire should be hot only when the lights are on. When I flip the lights on, I get no change in behavior. Can I actually get a fuse in the fuse panel that is hot only when the lights are on? #16 ILM sounds rather promising, but it's a 15A fuse and I don't want to start randomly plugging things in. Can anyone suggest a fuse to use in the LGT fuse panel? If I absolutely have to, can I use some wire coming out of the steering column? There must be something over on the left that will make this work correctly. Ideas? Thanks!!! Link to comment Share on other sites More sharing options...
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