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  #1  
Old 1 Week Ago
79Harleydavidson 79Harleydavidson is offline
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Default 79 xl back on the road.

Hey guys, Its been quite a while since I have been on and posted anything at all. So my question, Im getting my ol 79 back on the road. Shes taken a long nap just due to life and prioritizing things with my kiddo. (went through a divorce but got to keep the bike! Thanks to owning things before marriage). Anywho I have a 79 XL, its been customized from the prior owner and some myself. Mustang tank, turnout straight pipes, S&S shorty E, 18" Apes, Fatboy headlight. No gauges no fancy electronics. This weekend, im doing the alternator changeover along with some brakes etc. My question, my bike still has the old ford style relay on the bottom. I upgraded years ago to an actual ford bronco relay after it stuck on and melted my harness and blew a starter. I have seen guys talk about putting a start switch for a just in case start button. Im more than likely overthinking it but how can I wire this in? Do I just put it inline to the starter signal on the relay and positive? Thanks in advance.
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Hi. Glad to see another ironhead coming out of hibernation.

I am not clear on what you want to do. Do you not already have a starter button? If you already have a relay, the coil on it it must be connected to a starter button or it won't be doing anything. Are you trying to wire in a second starter button in case the main one stops working? I would suggest not. Just have one starter button and if it fails for some reason, you can always get home by kickstarting or pushstarting then fix or replace the button when you get home.

Your normal starter button is in series with the ignition switch and with the kill switch so if either of those are off, pushing your starter button does nothing. You don't really want to change that.

Also, you may just be using the wrong word, but you should not use a switch for the starter. You should only use a button (or momentary contact switch) that disengages when you release it. You do not want a switch that will keep the starter motor running until you turn the switch off.
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79Harleydavidson 79Harleydavidson is offline
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Yah I want was thinking of adding an emergency switch in down there. I have the old original switches and have replaced em but i just dont care for them . As for switch yah i mean a 30amp momentary switch. Or i may do a marine 3 cycle ignition i suppose
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Default 79 xl

You can make a parallel circuit from the relay red to a momentary switch then to the solenoid.That way you are protected by the main overload.You still need the key on to start the engine.
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Quote:
Originally Posted by sungod View Post
You can make a parallel circuit from the relay red to a momentary switch then to the solenoid.That way you are protected by the main overload. You still need the key on to start the engine.
Solenoid red is direct from the main circuit breaker. So if you wire it the way you suggest, then:
- yes it is protected from overload by the main circuit breaker
- yes you need the key on to start the engine
- but you can run the starter without the key on. It won't start the engine because the ignition is still off but there would be nothing to stop you running the starter with that new switch.

And just so the original poster understands what wiring it this way would do, it would bypass the relay. Bypassing the relay should not be a problem though if you have a pushbutton rated at 30 amps.
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further to that, wired in this fashion, anyone can run the starter anytime without a key. no the bike won't start, but it will move and fall off the kickstand if you have left it in gear.

So many reasons NOT to do it!
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Default 79xl

Quote:
Originally Posted by billeuze View Post

So many reasons NOT to do it!
Could you add a momentary key operated switch?Sure
I agree no real good reason for the mod.If you get jammed up you can always jump the relay with a temp connection and achieve the same outcome.
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The time may be better spent by adding a kick start to it instead!
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79Harleydavidson 79Harleydavidson is offline
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Yah Im thinking Honestly I may just upgrade my ignition to a marine grade 3 position with the build in momentary to start the bike. Will for sure minimize things. Ill just relocate the kill toggle or put a momentary inline to the coil to kill the old girl if needed. Shes going to get a few upgrades and cleaning up soon
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79Harleydavidson 79Harleydavidson is offline
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https://photos.google.com/search/mot...BFAgggjjnk4_WO

Not sure if the link will work but thats my old girl. Shes come a long way since I got her

Last edited by 79Harleydavidson; 1 Week Ago at 15:35.. Reason: Added a link
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