Gixxus Christ! Posted April 25, 2015 Report Share Posted April 25, 2015 There may be some wires you have to jump if you remove the stop safety unit. I disabled the starter safety on my 73 cb750 and had to jump some wires in the clip to get the bike to start again. Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 Wiring diagramStoplight warning unit1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 I just want to unclip it. Unless its the problem I don't want it gone.1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 Okay, so the stop light module has been making this whole process funky. I unplugged the module then unplugged the wore to the sensor and the light comes off and stays off. When I reconnect it to the switch, it comes on1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 Ahhhh! Fuck yeah! So I unplugged the stop light module and turned the key over and the oil light is on. This is normal. So, I start the bike and the light goes off! I turn the bike off and the light turns back off! I have no idea what that little module does or why its been making my life hell, but I KNOW I have pressure from burping the filter, and the switch is clearly responding to the oil pressure by turning off when I start the bike. Im going to replace the module, but you guys think I'm safe for a ride around town?1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 ***So, I start the bike and the light goes on****1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 Turn the bike off**Jeez, too excited to type.1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted April 25, 2015 Report Share Posted April 25, 2015 well yeah. with the stop warning doohickey disconnected you can isolate the oil pressure switch. Leave it unplugged and hook up the switch. Ignition on, light should be on. Start motor, light should turn off. If it doesn't then you have an issue with the wire between the switch and the light. If the light turns off with the motor running but turns back on when you connect the stop warning jobby then the issue is with that system. Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted April 25, 2015 Report Share Posted April 25, 2015 Read up on the stop warning light. It will also come on if you have LED tail lights or if either filaments in the tail light bulbs are out so double check and make sure you have both tail and brake light. Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 So I CANNOT find this part secondhand online. I called our local Honda shop... $141 dollars for that little bastard.NOW, its got me wondering. Again, because I'm a dumbass, I put an LED bulb in my tailight a week ago. I never noticed my stoplight running, but I've been dealing with a charging system problem so I wonder if I just overlooked it, I haven't really been running the bike. Is it possible for the lack of power draw from the led bulb in the back to trigger the stop light as it thinks my tailight is out?... Testing to follow, I just want to keep you guys in the loop. If this whole problem was cause by an LED bulb I'm probably going to break down in tears lol1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 I didn't even read your comment before my last one skullcrusher. Can't believe I forgot to mention the tailight... 1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted April 25, 2015 Report Share Posted April 25, 2015 Lol... yeah LED bulbs don't draw enough current and they make the unit think the bulb is burnt out. So easy fix bro! And now you have a deeper, more personal relationship with your scoot! Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 It was the bulb.. I want to thank you guys a ton. I've been up and down forums trying to figure this out and you guys are the only ones to continuously answer my questions and continue to suggest things. Beers on me if you guys are ever in Wayne county.1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 I feel dumb, just glad it was fixed lol I was so blinded by thinking it was related to the oil change that I couldn't think outside that box.I couldn't see the forest through the trees.1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted April 25, 2015 Report Share Posted April 25, 2015 Oh I end up in Wayne Co quite frequently when I ride. Glad we could be of service, I enjoy figuring out stuff like this. If you ever find yourself in too deep, I fix bikes out of my garage in massillon. Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted April 25, 2015 Report Share Posted April 25, 2015 Good judgement comes from experience my friend, and experience comes from poor judgment. Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 Thanks a ton, not even playing though. I work in Wooster. 419-606-5047. Shoot me a text or call me if your looking your hard earned beer lol I've got a cb350 I'm working on so I'll be back on here before you know it lol1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted April 25, 2015 Report Share Posted April 25, 2015 Sure thing. If I ever get my 849 cc cb750 project bike back on the road we can go on a vintage ride. I also have a rubbermade tote FULL of parts if you ever need something. Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 I'll have to keep that in mind, don't plan on modifying this bike much as its so limited, but who know what might fall of next lol1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
Gump Posted April 25, 2015 Report Share Posted April 25, 2015 Good job Crazyskullcrusher! Glad ya'll got it figured out and posted the findings. It'll help peeps who read this for their future fixes. More often than not a problem is posted, help given, then they disappear and its left hanging. Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted April 25, 2015 Report Share Posted April 25, 2015 He's lucky I'm a persistent bastard Lol. But yeah dude, don't just come for tech advice, come on some rides, argue about guns or politics or something, lots of good people on here. Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 Will do! I've never been able to find a functional forum until this one. Tapatalk helps too1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
dustyxbla Posted April 25, 2015 Author Report Share Posted April 25, 2015 Right, I've found a lot of dead end forums, didn't want to leave the future riders or cb750s stranded in their garage, or worse.1979 CB750 Limited Edition Quote Link to comment Share on other sites More sharing options...
Ozzie Posted April 6, 2019 Report Share Posted April 6, 2019 I’ve been having a similar problem on my 1979 CB750L. I changed all the lights to led’s, but my oil pressure light stays on. I bought a new oil pressure switch, and I have enough oil and oil pressure. After reading this forum, I think I need a resistor, but I’m not sure where exactly. Do I need to put one by the stop light warning unit, down by the oil pressure switch, or in line with the taillights? Any help would be great! Quote Link to comment Share on other sites More sharing options...
Butch Posted April 8, 2019 Report Share Posted April 8, 2019 You will need to wire the resistor directly in line with the lights. Probably will need one inline with each bulb you replaced (turn, brake, etc.) I think about 6 ohm/50 watt resistor per bulb if they are 1157 type bulbs. Quote Link to comment Share on other sites More sharing options...
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