Sprint Posted December 29, 2023 Share Posted December 29, 2023 1993 vfr750- Does anyone know the left to right color code order with the relay orientation below Red/yellow blue/black black Thanx Quote Link to comment Share on other sites More sharing options...
Member Contributer Captain 80s Posted December 29, 2023 Member Contributer Share Posted December 29, 2023 I think I'm rolling the 92 on the lift for it's next round of upgrades, so if you don't get an answer soon I will have one for you. Quote Link to comment Share on other sites More sharing options...
Member Contributer Captain 80s Posted December 29, 2023 Member Contributer Share Posted December 29, 2023 For that pic... L - BLK/BL C - BLK R - RED/YL Quote Link to comment Share on other sites More sharing options...
Member Contributer Grum Posted December 29, 2023 Member Contributer Share Posted December 29, 2023 4 hours ago, Captain 80s said: For that pic... L - BLK/BL C - BLK R - RED/YL Yep, agree with the Captain. See Attached pic shows it. For Info - Black/Blue = 12v power to Fuel Pump Black = 12v input. Red/Yellow = ICM engine run signal to energise relay. #4 Ignition Coil Ground pulses. Quote Link to comment Share on other sites More sharing options...
Sprint Posted December 29, 2023 Author Share Posted December 29, 2023 Thank-you! Quote Link to comment Share on other sites More sharing options...
Sprint Posted December 30, 2023 Author Share Posted December 30, 2023 Wired it up as sugesteds Pump works when jumped Black has a good 12 volt Original relay- no pump new relay #1- no pump new relay #2- no pump Cleaned r/y at coil Cleaned coil ground Pulled continuity from r/y at coil to relay-beeeeeep Bike will run Still no pump No visable breaks at any of the connections ECU issues???? The bike always started hard when cold....harder that the rest of my vfrs! Anyone run into this issue? Quote Link to comment Share on other sites More sharing options...
Member Contributer Captain 80s Posted December 30, 2023 Member Contributer Share Posted December 30, 2023 Where are you sourcing the relays? The one in your first post looks generic. Also remember that the pump won't "prime" with the key switched to on. It will only operate when the bike is being cranked or running. "Red/Yellow = ICM engine run signal to energise relay. #4 Ignition Coil Ground pulses." - Grum If you want to determine if the relay was responsible for starting / running issues, just keep the blk - blk/blu jumped or install a toggle. 1 Quote Link to comment Share on other sites More sharing options...
Member Contributer Grum Posted December 30, 2023 Member Contributer Share Posted December 30, 2023 Try bench testing the Relays. Apply 12v to the center pin, Ground/Negative to the right pin. Do you hear the relay click? Does 12v appear on the left pin? I'm not familiar with the internal triggering of the coil and only assuming that a non pulsed ground might also operate the relay, worth a try. Also suspicious of the relay type, configuration and quality you may have purchased. 1993 OEM part is - RELAY, FUEL CUT (SHINDENGEN) 36100-MN4-008 Interesting Info..... for a 97 model someone posted this pin to wire configuration..... -Top/ left to right - Bl, R/Y, Bl/Bu. Yet according to Partzilla 1993 and 1997 fuel cut relays are the same part number!! Sorry, I don't own a 93 or 97 to physically check for you. Confusing!!! You may need to experiment with the wire to pin config with your bench testing of the relays! Quote Link to comment Share on other sites More sharing options...
Member Contributer Captain 80s Posted December 31, 2023 Member Contributer Share Posted December 31, 2023 4 hours ago, Grum said: Interesting Info..... for a 97 model someone posted this pin to wire configuration..... -Top/ left to right - Bl, R/Y, Bl/Bu. Yet according to Partzilla 1993 and 1997 fuel cut relays are the same part number!! Sorry, I don't own a 93 or 97 to physically check for you. Confusing!!! My 95 does not have the bodywork off to compare anything, but I'm pretty damn sure they use the same relay. 1 1 Quote Link to comment Share on other sites More sharing options...
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