Author Topic: No luck second wiring harness from partsnmore??  (Read 1238 times)

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jay72chevy

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No luck second wiring harness from partsnmore??
« on: August 23, 2008, 05:48:48 PM »
I ran everything just like b4. The last one strated to smoke and wasnt getting anything anymore.

Just before all that happened i had everything working. Then i said well i can put these new stems on for turn signals. The next day turn on the key and it started to smoke on me.  Now it likes to pop fuses. It was doing that last time too and then the wiring smoked.

I rebuilt the key switch (long story). It works. Should i get new one. Could that be shortening something out? I am thinking its getting too much voltage for some reason??

I didnt run it and maybe the coils pumping up with juice from me cranking it over without starting it and poping fuses???

The ground is on and tight near the selenoid on the frame. What is going on anyone help me here?? Thanks

Offline Hush

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Re: No luck second wiring harness from partsnmore??
« Reply #1 on: August 23, 2008, 06:51:52 PM »
You got serious shorting problem my friend, don't hook the harness up to the battery until you check and recheck all connections.
For that much damage to happen there must be a power wire grounded somewhere! ???
You could do the methodical thing, disconnect everything at the connectors then add the battery to the wiring harness, now add each connector slowly until it smokes again, a bit radical but would probably work.
If you suspect the ignition then leave that disconnected but hook everything else up, then add ignition (carefully looking for smoke) if you get heat in your wires again disconnect ignition and have a damn hard look at that.
I have found most of my wiring faults within the headlight bucket, colours sometimes not quite coded right by PO.
Have fun.
I think the thing I most like about motorcycling is the speed at which my brain must process information at to avoid the numb skulls who are eating pies, playing the ukulele, applying make-up etc in the comfort of their airconditioned armchairs as they make random attempts to kill me!!!!!!!

Offline oldbiker

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Re: No luck second wiring harness from partsnmore??
« Reply #2 on: August 24, 2008, 12:38:48 AM »
No need to wait for smoke! Replace the fuse with a spare 12v bulb and switch on. The bulb will light because of the short. Search around till the bulb goes out and you have found your fault. The bulb will protect your harness while yousearch. Finally replace the fuse.

Online bryanj

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Re: No luck second wiring harness from partsnmore??
« Reply #3 on: August 24, 2008, 05:13:59 AM »
You cant get more voltage than the battery has! There is a small ground connector bolts to the coils and frame paint need to be removed so that the connection is good, that will give very odd faults
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Offline Jonesy

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Re: No luck second wiring harness from partsnmore??
« Reply #4 on: August 24, 2008, 06:47:09 AM »
There is a small ground connector bolts to the coils and frame paint need to be removed so that the connection is good, that will give very odd faults

Did the 750 ever have this? I remember the 550 having a ground pigtail there.. The 750's ground lug is near the back of the harness and attaches to the frame via one of the seat lock mounting bolts.
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Offline jtb

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Re: No luck second wiring harness from partsnmore??
« Reply #5 on: August 24, 2008, 07:56:20 AM »
There is a small ground connector bolts to the coils and frame paint need to be removed so that the connection is good, that will give very odd faults

Did the 750 ever have this? I remember the 550 having a ground pigtail there.. The 750's ground lug is near the back of the harness and attaches to the frame via one of the seat lock mounting bolts.

I don't know about the 750K models, but the 77F has one.
1977 CB750F
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1986 VFR 750 (gone but missed greatly)

jay72chevy

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Re: No luck second wiring harness from partsnmore??
« Reply #6 on: August 24, 2008, 09:14:51 AM »
without the switch turned on the left turn signals are blinking. The front right just stays on and the back right light is out.

The turn signal switch is not controling anything. Maybe that fried up on me with the last harness..... I checked the coils not ground wire. I am going to clean off the frame where the bolt goes through the coils so its grounded.

jay72chevy

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Re: No luck second wiring harness from partsnmore??
« Reply #7 on: August 25, 2008, 04:59:33 PM »
Still no luck with bike