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Jon and V Boat Conversions & Modifications
JetJon Conversion - SeaDoo SP into 1236 Fisher
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<blockquote data-quote="PSG-1" data-source="post: 295596" data-attributes="member: 6937"><p>To run a tach, you'll need to find the tach wire (usually green, but it depends on mfg.) and the 'ignition' wire (purple, as per ABYC codes, but again, it may vary with mfg.), as well as pulling a ground.</p><p></p><p></p><p>ANY tach should work with your engine, as it reads the 'tapping' (on/off of 12V+ signal sent by the crankshaft position sensor) You should be able to find a service manual for that engine, and it should show a wiring diagram or color code. If not, you'll have to do it by trial and error. </p><p></p><p>Best way to do this is to use a multi-meter to find your + and - voltage, and if there is any doubt, use some jumpers with alligator clips, and then use small glass fuses that blow at 1 amp. This way, if you DO make a mistake, you pop a fuse, instead of a component in your CDI.</p><p></p><p>I ran a teleflex outboard motor tach with my Tigershark engine. But since the FXHO runs up to 10K RPM, I needed a tach that read higher than 7K, so, I got the actual factory tach that goes with the FXHO engine in the AR230 jetboat. And that WAS a trial and error kind of thing to figure out the 8 wires that run to the tach (3 of them are for indicator lights) Not only that, but there are no stud connectors on the FXHO tach like on a regular tach, it uses an 8-pin plug, which, BTW, I was not able to get, I had to make a multi-pin plug (that was a real *****) </p><p></p><p>So, if I was able to do it with that tachometer, you should be able to do it with your boat!</p></blockquote><p></p>
[QUOTE="PSG-1, post: 295596, member: 6937"] To run a tach, you'll need to find the tach wire (usually green, but it depends on mfg.) and the 'ignition' wire (purple, as per ABYC codes, but again, it may vary with mfg.), as well as pulling a ground. ANY tach should work with your engine, as it reads the 'tapping' (on/off of 12V+ signal sent by the crankshaft position sensor) You should be able to find a service manual for that engine, and it should show a wiring diagram or color code. If not, you'll have to do it by trial and error. Best way to do this is to use a multi-meter to find your + and - voltage, and if there is any doubt, use some jumpers with alligator clips, and then use small glass fuses that blow at 1 amp. This way, if you DO make a mistake, you pop a fuse, instead of a component in your CDI. I ran a teleflex outboard motor tach with my Tigershark engine. But since the FXHO runs up to 10K RPM, I needed a tach that read higher than 7K, so, I got the actual factory tach that goes with the FXHO engine in the AR230 jetboat. And that WAS a trial and error kind of thing to figure out the 8 wires that run to the tach (3 of them are for indicator lights) Not only that, but there are no stud connectors on the FXHO tach like on a regular tach, it uses an 8-pin plug, which, BTW, I was not able to get, I had to make a multi-pin plug (that was a real *****) So, if I was able to do it with that tachometer, you should be able to do it with your boat! [/QUOTE]
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Jon and V Boat Conversions & Modifications
JetJon Conversion - SeaDoo SP into 1236 Fisher
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