Member Contributer TriumphTraitor Posted March 21, 2019 Member Contributer Share Posted March 21, 2019 Has anyone seen, or know what this randomly capped off plug is that is taped to the connector for the instrument cluster? I haven't found a wiring diagram that lists what it is Link to comment Share on other sites More sharing options...
GreginDenver Posted March 22, 2019 Share Posted March 22, 2019 Sometimes what looks like a capped-off plug is actually a diode. Or possibly a plug-in point for diagnostics. Link to comment Share on other sites More sharing options...
Member Contributer TriumphTraitor Posted March 22, 2019 Author Member Contributer Share Posted March 22, 2019 diagnostics seems possible, there are about 5 wires going to this connector. what I find weird is the cap is completely taped to the harness. you would think as a diagnostics port it would be easily accessible similar to the red one on the right side of the bike. Browsing some images on google, i haven't seen any other harnesses with this connector. Link to comment Share on other sites More sharing options...
Member Contributer TriumphTraitor Posted March 22, 2019 Author Member Contributer Share Posted March 22, 2019 13 minutes ago, TriumphTraitor said: diagnostics seems possible, there are about 5 wires going to this connector. what I find weird is the cap is completely taped to the harness. you would think as a diagnostics port it would be easily accessible similar to the red one on the right side of the bike. Browsing some images on google, i haven't seen any other harnesses with this connector. Well, Seems ive found an answer for anyone else who is curious. It is a rectifier as per this parts catalog https://www.bike-parts-honda.com/honda-motorcycle/800-MOTO/VFR/2009/VFR800A9_A/Frame/--FAISCEAU-DES-FILS-VFR800A-/97198/F_32_1/2/10418 part number 4 Link to comment Share on other sites More sharing options...
Member Contributer JZH Posted March 23, 2019 Member Contributer Share Posted March 23, 2019 It's what Honda calls the clutch diode. Ciao, JZH Link to comment Share on other sites More sharing options...
Member Contributer TriumphTraitor Posted March 23, 2019 Author Member Contributer Share Posted March 23, 2019 clutch diode eh? any idea what its for? it seems like early model gen 6's don't have it Link to comment Share on other sites More sharing options...
Member Contributer Grum Posted March 23, 2019 Member Contributer Share Posted March 23, 2019 20 hours ago, TriumphTraitor said: clutch diode eh? any idea what its for? it seems like early model gen 6's don't have it The diode block is actually a double diode, each diode simply works like a hydraulic one way valve, allowing electrical flow in one direction and not the other. As you can see by the attached drawing you would expect to see 3 wires at your plug which I think I can identify from your picture. So, the diodes are all about providing in gear, clutch in start, and providing correct Neutral light indication. The upper diode in the drawing is the Clutch Diode. It's purpose is to Stop the ground (being provided by the clutch pulled in and side stand switch up) enabling the Neutral Light whilst in gear, and allows the start relay to energise for an in gear, clutch in start. It also allows the Neutral Switch ground to flow to the Starter Relay in a normal neutral gear, side stand down start. If there was no clutch diode (or a shorted diode) and it was a solid wire, then every time you pulled in the clutch while riding your Neutral Light would come On! As for the lower diode on the Neutral Indicator side I'm not too sure of its purpose, and suggest that if it was a solid wire without the diode, things would still work normally. Also the Diode Block is part of the Fuse Box on the 6gens I've owned. (Non ABS). Link to comment Share on other sites More sharing options...
Member Contributer TriumphTraitor Posted March 25, 2019 Author Member Contributer Share Posted March 25, 2019 Thank you @Grum for such a detailed explanation. It never dawned on me to check the beginning of each section for a wiring schematic. Does make sense why it's there now. Cheers! Link to comment Share on other sites More sharing options...
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