Scud Posted March 5, 2016 Share Posted March 5, 2016 Glad it worked out. I see you had to make a metric to SAE conversion to mount it - but was there no problem between the drive gear and whatever it connects to inside the GM unit? The sender will probably disappear when you paint it black. Link to comment Share on other sites More sharing options...
moto fugazzi Posted March 5, 2016 Share Posted March 5, 2016 Glad it worked out. I see you had to make a metric to SAE conversion to mount it - but was there no problem between the drive gear and whatever it connects to inside the GM unit? The sender will probably disappear when you paint it black. There's a little 1/8" rod that connects to two pieces...just like the original speedo cable. With the Dakota sender, they include that rod, and I just need to cut it to length. Shouldn't be an issue. If I paint the sender red, will it read a faster MPH? Ken In this pic, the sender has a cable "pass through" so that you could still use your original cable. I bought the version without this feature. 1 Link to comment Share on other sites More sharing options...
moto fugazzi Posted March 18, 2016 Share Posted March 18, 2016 In getting ready to install these, the directions for wiring the tach say to connect it to the neg. wire of the coil. Is it the green wire on the coil? How did you guys splice into it? Ken Link to comment Share on other sites More sharing options...
Scud Posted March 18, 2016 Share Posted March 18, 2016 Go back to page 1 of this thread and see some of the wiring discussion/photos. I used the signal wire from the stock plug - I did not try to tap in near the coil as suggested. The stock plug has three wires - power, ground, and signal. I snipped off the stock connecter and used the three wires that were already run to the gauge. Link to comment Share on other sites More sharing options...
moto fugazzi Posted March 19, 2016 Share Posted March 19, 2016 Here's how I'm mounting my gauges. 8/32 tee nut epoxied to the back of the gauges with 2" long by 8/32 threaded rod. In retrospect, I wonder if Speedhut would install a mounting stud in these at the time of ordering? That would really simplify things. Ken I wrapped some tape around the gauges to center it in the cup. 2 Link to comment Share on other sites More sharing options...
moto fugazzi Posted March 23, 2016 Share Posted March 23, 2016 Go back to page 1 of this thread and see some of the wiring discussion/photos. I used the signal wire from the stock plug - I did not try to tap in near the coil as suggested. The stock plug has three wires - power, ground, and signal. I snipped off the stock connecter and used the three wires that were already run to the gauge. Did you install the resistor as recommended by Speedhut? Seems strange that it needs to be connected to a 12VDC+ source. Connecting the ECU to another pos. power supply kind of worries me, but I have very limited electrical back ground. Ken Link to comment Share on other sites More sharing options...
Scud Posted March 23, 2016 Share Posted March 23, 2016 In posts 13 and 14 of this thread I tried to explain/document the wiring I used. I did not use the resistor - I only tapped into existing wires in the dash. One of the three wires that goes with the existing tach plug carries the signal - the red wire with black strip in my hand in post #13. You'll KiwiRoy's explanation of those wires in earlier posts. - that's how I knew to use that wire. I think Speedhut's instructions assume that you are adding a tach and that there is no existing signal wire. Link to comment Share on other sites More sharing options...
moto fugazzi Posted March 24, 2016 Share Posted March 24, 2016 Thanks Scud! I just called Speedhut to inquire about why they do this, and they said it's used to amplify the signal from the ECU, as some ECU's have too weak of a signal for the Tach to recognize the pulses. Knowing that others have installed without said resistor, I know mine will work fine without it. Just waiting for the weather to warm up some...my fingers don't enjoy wiring in 35f weather. Since I currently have the tank off, I'm contemplating running a separate feed for the gauges from my fuzeblock. That way I don't have to add a small fuse inside the gauge housing, and 2 less things connected to the light circuit. Ken Link to comment Share on other sites More sharing options...
Kiwi_Roy Posted March 24, 2016 Author Share Posted March 24, 2016 The resistor is called a "Pull Up Resistor", sometimes electronic circuits don't provide Voltage they might just be a transistor or other solid state switch. The resistor ensures that when the switch is open the tacho sees 12 Volts, when the switch is closed it seen nominal 0 Volts similar to a tach wired across a set of points. I suspect the Guzzi ECU puts out 5 Volt pulses so the resistor is not required. BTW, I thought the pulse input speedo would require something similar but it worked fine with just a reed switch, Speedhut thought of everything. Link to comment Share on other sites More sharing options...
Scud Posted March 25, 2016 Share Posted March 25, 2016 Since I currently have the tank off, I'm contemplating running a separate feed for the gauges from my fuzeblock. That way I don't have to add a small fuse inside the gauge housing, and 2 less things connected to the light circuit. There a probably many equally effective ways of getting these wired in. FWIW - I powered all 4 gauges from the wires that previously supplied two light bulbs in one of the ITI gauges. I used the fuse that Speedhut supplied - and tucked it inside the gauge housing. Link to comment Share on other sites More sharing options...
moto fugazzi Posted March 27, 2016 Share Posted March 27, 2016 Well, upon installing the gauges last night, the JB Weld broke off of the plastic that was holding the tee nuts in place. Instead of trying to redo it, I took the gauges apart and installed a threaded coupler on the outside, with a machine screw on the inside. Plenty of room in there, so no worries about anything touching. Damn, it sucks putting those back together perfectly. I'll be using machine screws from the outside of the surround to keep it in place. Ken 1 Link to comment Share on other sites More sharing options...
moto fugazzi Posted March 27, 2016 Share Posted March 27, 2016 Done except for programming the new gauges, and buttoning things up. Ken 2 Link to comment Share on other sites More sharing options...
moto fugazzi Posted April 1, 2016 Share Posted April 1, 2016 Finally got a chance to do a test ride and set the speedo and tach. 40f and drizzle, but I got it done. The Dakota Digital speed sensor works perfectly with no issues (yet). As far as the tach goes, set pulses to 2. Since I have parts still out for powder coating, I had to make a temporary cover for the alternator. I used an old gallon container. Here's the Dakota Digital SEN 01-1 installed. http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=620/prd620.htm 1 Link to comment Share on other sites More sharing options...
Scud Posted April 1, 2016 Share Posted April 1, 2016 Love the milk jug! But still looking forward to the results of the powder-coating. The speed sensor seems to have nearly vanished since you painted it black. Now you can also make the cable disappear. Link to comment Share on other sites More sharing options...
gargoyle Posted July 5, 2016 Share Posted July 5, 2016 So I've just ordered my gauges from Speedhut. Actually this is my second order. I decided to be different. It sure was nice that they are having a sale through today. Anyway here is my template of my idea for the perfect gauge cluster. Now I have to find a buyer for my first set. 3 Link to comment Share on other sites More sharing options...
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