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#1028929 SMSgt (User) No, I don't ride a Harley, why do you ask? Gold Boarder Posts: 650 Tachometer help 1 Week, 5 Days ago   I've put a faring on my 04 R* and am looking at gauges for it. At the moment I have found a matching Speedometer and tach. They are both white faced and the speedo is a GPS unit so there are no issues there. My question is concerning the tach. I found it on ebay and the description says "Universal For All Engine If Engine has RPM Signal Out. Just Setting The Speed Rate To Fits All Vehicle Engine. We only send item to US." I don't know where to get an RPM signal, unless they are talking about from a coil. And I don't know what they are talking about speed rate. I really and pretty good at this stuff but it like I'm trying to interpret a foreign language or something. Can anyone help me here or maybe someone has a tach and speedo you can suggest? Thanks for your help Kent   Logged       The administrator has disabled public write access. #1028932 davej (User) Platinum Boarder Posts: 18167 Re:Tachometer help 1 Week, 5 Days ago   The signal comes from the coil and speed rate is likey that it has a switch for use on 2,4,6 or 8 cylinder motors. Make sure they are waterproof before buying. I know Warden bought some for fairing mount that were sealed. I think they were from Speedhut.   Logged     Last Edit: 2018/02/11 06:34 By davej.   dave   The administrator has disabled public write access. #1028956 SMSgt (User) No, I don't ride a Harley, why do you ask? Gold Boarder Posts: 650 Re:Tachometer help 1 Week, 4 Days ago   I'll check out check out Speedhut. Here is the link for the one on ebay. https://www.ebay.com/itm/MotorBike-Car-Boat-Motorcycle-Adjustable-Universal-Engine-Tachometer-REV-Counter/292137827778?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160727114228%26meid%3D2c2dc2a4e2c94b27ac2046d98257a739%26pid%3D100290%26rk%3D1%26rkt%3D4%26sd%3D292137827778%26itm%3D292137827778&_trksid=p2060778.c100290.m3507   Logged       The administrator has disabled public write access. #1028959 BikerRon (User) Sour Kraut Platinum Boarder Posts: 4189 Re:Tachometer help 1 Week, 4 Days ago   The tach needs to be for a twin fire ignition. Harley uses the same setup on the newer bikes. Meaning the coil fires the plugs every revolution of the crank.   Logged     ' width='450' border='0' style='max-width:450px; ' />   The administrator has disabled public write access. #1028960 SMSgt (User) No, I don't ride a Harley, why do you ask? Gold Boarder Posts: 650 Re:Tachometer help 1 Week, 4 Days ago   So I just have to put the tach input wire to one of the coils? Does it matter which coil? Which wire on the coil do I connect to the tach? Thanks Kent   Logged       The administrator has disabled public write access. #1028961 davej (User) Platinum Boarder Posts: 18167 Re:Tachometer help 1 Week, 4 Days ago   BikerRon wrote: The tach needs to be for a twin fire ignition. Harley uses the same setup on the newer bikes. Meaning the coil fires the plugs every revolution of the crank. I'm not positive but I think that on a tach that is adjustable for 2,4,6 and 8 cylinder engines he would just have to set it to the 4 cylinder engine setting.   Logged     dave   The administrator has disabled public write access. #1028962 BikerRon (User) Sour Kraut Platinum Boarder Posts: 4189 Re:Tachometer help 1 Week, 4 Days ago   Either coil and you attach the signal wire to the negative terminal.   Logged     ' width='450' border='0' style='max-width:450px; ' />   The administrator has disabled public write access. #1028963 davej (User) Platinum Boarder Posts: 18167 Re:Tachometer help 1 Week, 4 Days ago   SMSgt wrote: So I just have to put the tach input wire to one of the coils? Does it matter which coil? Which wire on the coil do I connect to the tach? Thanks Kent the signal comes from the neg side of the coil. whatever coil is easier to get to the neg side but don't matter other than that   Logged     dave   The administrator has disabled public write access. #1028964 BikerRon (User) Sour Kraut Platinum Boarder Posts: 4189 Re:Tachometer help 1 Week, 4 Days ago   davej wrote: BikerRon wrote: The tach needs to be for a twin fire ignition. Harley uses the same setup on the newer bikes. Meaning the coil fires the plugs every revolution of the crank. I'm not positive but I think that on a tach that is adjustable for 2,4,6 and 8 cylinder engines he would just have to set it to the 4 cylinder engine setting. Rodger that. All the mini tachs I’ve mounted on Yamaha v-twins have been of the dual fire variety. The switch I’ve seen on some were to read the signal from either 2 stroke or 4 stroke engines.   Logged     Last Edit: 2018/02/11 18:00 By BikerRon.   ' width='450' border='0' style='max-width:450px; ' />   The administrator has disabled public write access.

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