Yamaha Star Bolt Motorcycle Forum

General Info => New Member Introductions => Topic started by: UncleNos on April 23, 2020, 05:40:05 pm

Title: Electrical Issue
Post by: UncleNos on April 23, 2020, 05:40:05 pm
Hi Everyone.
Really hopeful that some one may have had and solved this issue or at lease have an Idea.
Not long after buying my XV950 ABS (I'm in Scotland) it had the abs light on I didn't think too much on this but after being out in the rain it dropped power, actually feels like running on one cylinder. I inspected the electrics and discovered that the first two fuses where badly corroded. I changed the wiring to bypass these to new temporary fuses so that I could see if this was the cause. No such luck, still had the ABS light and the drop in power when it is wet...grrrr...
I do have a full front wiring loom in case it comes to that I think that our weather is not doing it any favours and it may be a case of putting the replacement harness in and waterproofing as best as possible all the connections.
Any info or encouragement would be appreciated
Title: Re: Electrical Issue
Post by: Crilly Wizard on April 23, 2020, 06:13:00 pm
I mentioned this in a previous thread a couple of years ago. Very common problem in the UK with salty roads, and has happened to both of my XVs. First one had harness replaced under warranty, current one I caught early and cleaned and protected. That mini fuse box has no protection from the underside at all, and the gap under the left of the seat lets water drip down on to the area.
Corrosion protection is also needed on the clutch switch at the lever, and both idle adjustment screws behind the airbox.
Use lots of ACF50 everywhere when you get it all sorted.
Title: Re: Electrical Issue
Post by: Sdaniels on April 23, 2020, 07:48:19 pm
I'm wondering if anybody has had issues with the regulator/rectifier.  Sits a the bottom of the frame, just in front of the rear tire.  Prime location for all kinds of road grime/rain water to wreak havoc.
Title: Re: Electrical Issue
Post by: UncleNos on April 24, 2020, 03:00:16 am
I mentioned this in a previous thread a couple of years ago. Very common problem in the UK with salty roads, and has happened to both of my XVs. First one had harness replaced under warranty, current one I caught early and cleaned and protected. That mini fuse box has no protection from the underside at all, and the gap under the left of the seat lets water drip down on to the area.
Corrosion protection is also needed on the clutch switch at the lever, and both idle adjustment screws behind the airbox.
Use lots of ACF50 everywhere when you get it all sorted.

Thanks Crilly, so looks like I'm on the right track with replacing the loom at the front then? Sad days sounds this is either going to be a lot of work or expensive to have someone do for me.
Title: Re: Electrical Issue
Post by: Crilly Wizard on April 24, 2020, 03:12:00 am
You are lucky to have the loom, under warranty, I was told the loom cost more than £3000!!
It took a trained Yamaha mechanic all day, so if you could do it yourself it would be cheaper.

The rectifier/regulator have properly sealed connectors, and have never given me any trouble. Yet.
Title: Re: Electrical Issue
Post by: UncleNos on April 24, 2020, 03:25:22 am
You are lucky to have the loom, under warranty, I was told the loom cost more than £3000!!
It took a trained Yamaha mechanic all day, so if you could do it yourself it would be cheaper.

The rectifier/regulator have properly sealed connectors, and have never given me any trouble. Yet.

I managed to the get the front loom, from a bike with less than 5k on it for under £100 absolute steal. I bought it thinking if it is this good to have the option.
I have a Virago 535 that I am putting back together so may just start the 950 after I discover where all the bolts I have lying about go  :)
Title: Re: Electrical Issue
Post by: ShakerNorm on April 24, 2020, 04:56:57 am
I think Crilly is right when he said Use lots of ACF 50 - it's GREAT stuff if you can get hold of it. 

At the VERY LEAST - smear LOTS of Di-electric grease (such as Dow-Corning DC-4 or something similar) on ALL your electrical connections to keep the water and dampness out. Water (especially salt water!) plays HELL with electrical connections and aluminium. 

If you can get hold of ACF-50 - spray it EVERYWHERE on your bike, except the plastic stuff. It will actually coat and seal to the metal and stop corrosion in it's tracks.  Even on places like hot engine fins. It will actually bake into the pores in the aluminium.

I hope the re-wiring helps!

What part of Scotland are you from?  My family was originally from around Dornie... On the West coast in the Highlands. But we've been in Canada for a few generations, now....
Title: Re: Electrical Issue
Post by: UncleNos on April 24, 2020, 01:21:19 pm
My family was originally from around Dornie... On the West coast in the Highlands. But we've been in Canada for a few generations, now....
Not from too far away by your standards, 200 miles. It is a nice run from here to there.
Title: Re: Electrical Issue
Post by: UncleNos on April 26, 2020, 01:31:20 pm
So looks like I have found one of the issues, at least with the probable drop to one cylinder anyway. The terminal was completed corroded off.
Title: Re: Electrical Issue
Post by: Crilly Wizard on April 26, 2020, 01:53:46 pm
Thatís very bad general corrosion for such a young bike. Where exactly is that pic focussed on?
Title: Re: Electrical Issue
Post by: UncleNos on April 26, 2020, 06:12:47 pm
Thatís very bad general corrosion for such a young bike. Where exactly is that pic focussed on?

That is the coil on for the rear cylinder....
I know it had been a commuter bike but yes its pretty bad.
Title: Re: Electrical Issue
Post by: ShakerNorm on April 27, 2020, 03:31:37 am
My family was originally from around Dornie... On the West coast in the Highlands. But we've been in Canada for a few generations, now....
Not from too far away by your standards, 200 miles. It is a nice run from here to there.
About 3 hours on the highways here..... but undoubtedly, 200 miles of flat farmland couldn't compare with the ride through the Highlands! ;D  Although you'd also be stunned by a trip through the Rocky Mountains out here, too!  ;D

The rust on that hardware is pretty bad.  I'm wondering if your electrical problem is just a rusty Ground (Earth to you guys over there) connection.  If you can unscrew the hardware and give it a good bit of wire brush, you might solve the problem!  For cheap, even!

(Yeah, I know.... Scottish Stereotype.....  I tell everybody that the "Mc" in my name means "Me CHEAP"  ;D ;D )
Title: Re: Electrical Issue
Post by: UncleNos on April 29, 2020, 12:23:17 pm
Yes going to strip the loom out and give it a good clean then put the new one in and cover the connectors with dielectric grease. fingers crossed that does the trick.
Title: Re: Electrical Issue
Post by: lunkhead on April 30, 2020, 12:14:37 am
Crusty!  :P
Title: Re: Electrical Issue
Post by: UncleNos on April 30, 2020, 01:46:07 pm
Crusty!  :P
Yes It didn't look so bad when I bought it but it was a commuter and hasn't been treated with too much love.
Title: Re: Electrical Issue
Post by: ShakerNorm on May 01, 2020, 06:15:48 pm
We just got a new member from Britain with another no-start electrical problem.....  micrit431. 

I think Yamaha dealers should grease up all those connectors before they sell them!
Title: Re: Electrical Issue
Post by: VIKEN on May 01, 2020, 07:16:20 pm
In my books, this is exactly what love is... pure adventures together... no time to spare for beauty rests/sleeps  ;D

Crusty!  :P
Yes It didn't look so bad when I bought it but it was a commuter and hasn't been treated with too much love.
Title: Re: Electrical Issue
Post by: UncleNos on May 03, 2020, 04:03:06 pm
So spent yesterday and today (not all of it maybe eight hours max) stripping the old loom out and fitting the new one.
Now in the position that I am waiting for the replacement coil pack to arrive so I can see if I got it right  ;)
Title: Re: Electrical Issue
Post by: UncleNos on September 12, 2020, 04:05:52 pm
Totally forgot to update on this.
The bike runs well and the only issues I have is occasionally the bike acts like it has a battery issue then starts ten minutes later.
My bigger issue is the ABS light is still on I will start a new thread on that I think