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A Star Ride · 11-01-2009, 09:57 AM

hello all, I made a dumb mistake and first killed batery then crossed cables trying to jump now I have nothing but a dead bike stuck 50 miles away (but safe) anyway its a 2005 Yamaha royal star tour deluxe and I dont know what I may have damaged or where to start from here any advice would be appreciated the only sign of any life is the spark when (correctly) connecting cables but no horn dash head or neutral lights. Ive heard about fusable links rectifiers volt regulators and a CDI? I'm petty capable of changing out any part thats bad if I know where it is, but no clue in diagnosing anything electrical. Also the cables were left connected for several minutes before noticing they were hot and smelled plastic, meanwhile I was trying to make sure I was in neutral, etc expecting to start it on a gravel incline Ill check back here or email to A_Star_Rider@comcast.net

mscuddy · 11-01-2009, 10:43 AM

Jeez, that's bad. Get yourself a DVOM (Digital Volt Ohm Meter) and start tracing wires from the battery, to the "ignitor" that controls the spark, etc.

I had the grandfather to your bike, a 1980 Yamaha XS1100 Vision, and it had a rats nest of wiring with all the running lights, fairing, bags, etc. so I know how daunting your task will be.

There are fusable links on modern bikes that prevent major damage to the electrical system in a morbid electrical failure, they look like a little rubber cylinder about 1/2 inch long, usually on the hot side of the wiring harness.

Get a good 12volt car battery and connect it to the "hot" side of the soleniod. Then jump the starter soleniod by crossing the two "poles" with a screwdriver, have one of the spark plugs out, see if you're getting any spark.

Also check your fuse box, the reverse-polarity thing might have not blown the fuses, but smoked the wires as they go into the fuse box. I've seen that before on old Kawasakis and Volkwagen beetles.

When the harness smoked on my KZ750 I re-wired it for just the main stuff, ignition, charge circuit, headlight, tail light and turn signals. All I had was 14 gauge black wire, so I pity the poor bastard who has to re-wire the bike...hehhehhe

Good luck. Don't let anybody try to talk you into soaking the bike in warm salt water for a week. Doesn't work (hear that Ken?).

The_AirHawk · 11-01-2009, 02:14 PM

Fusible links are just a "small" section of wire that's designed to melt, saving the harness further-down the line from going away. Basically, a "fuse", only not so easily-replaceable.

Lights, fuses, wires, switches, even the starter-motor - shouldn't care which way current flows through them - HOWEVER, electronic-components such as voltage-regulators, the CDI Ignition, Hall-effect sensors (the crank sensor and/or cam sensor), EFI computer (if FI bike), possibly the fuel pump, anything like electronic trip-computers/fuel gauges, etc. - all of these will not like current running though them the "wrong way".

EFI microprocessors are typically reverse-current diode protected on all their inputs and outputs - but other components on the ECM motherboard will probably NOT have any such protection, so it's possible to have a processor show A-OK connected to a diagnostic machine, but still be a "bad" ECU.

I worked for a shop that had a kid install a battery backward in a Toyota - we replaced every bit of Electronics in the car: ECU, Radio, ABS Computer, Trip Computer, etc.

Serious Suckage. I hope you are far luckier.

seruzawa · 11-01-2009, 02:47 PM

If you tried to jump from a car and had the car's engine running then you are likely to blow stuff even if you hook the cables up correctly. Lucky for you the Royal Star doesn't have all that sophisticated a system like, say, a BMW does. Then you would really really really be hosed. As it is if you get a DVM and start tracing all the wires and checking all the fuses as has been stated you will probably be okay. CDI ignition modules are pretty tough. Don't ask me how I know this. I'm trying to sound like an expert here.

A Star Ride · 11-01-2009, 07:08 PM

thanks for the input it was main engine fuse, I had origionally checked all fuses in the main box and they were OK but there was an alternate loction 30 amper so now after rain riding 40 miles now my truck is down there and I get to go after that YAY and I missed football and the dega race but it was $1.00 repair so I shouldnt complain

A Star Ride · 11-01-2009, 07:10 PM

Quote:

Originally Posted by seruzawa

If you tried to jump from a car and had the car's engine running then you are likely to blow stuff even if you hook the cables up correctly. Lucky for you the Royal Star doesn't have all that sophisticated a system like, say, a BMW does. Then you would really really really be hosed. As it is if you get a DVM and start tracing all the wires and checking all the fuses as has been stated you will probably be okay. CDI ignition modules are pretty tough. Don't ask me how I know this. I'm trying to sound like an expert here.

I've jumped several bikes from running vehicles diddnt know there was risk involved. Im notorious for leaving the key in the bike and if I killed the engine with the sidestand, or the thumb switch Im good for walking away & never turning the key to off position

seruzawa · 11-01-2009, 07:39 PM

Quote:

Originally Posted by A Star Ride

I've jumped several bikes from running vehicles diddnt know there was risk involved. Im notorious for leaving the key in the bike and if I killed the engine with the sidestand, or the thumb switch Im good for walking away & never turning the key to off position

There are issues involving hooking up a system designed for a 20 amp alternator with an 100 amp alternator. The regulator may not be able to deal with the current potential for one.

MOKE1K · 11-02-2009, 04:40 AM

Figured it would just be the fuse, but didnt know what you jumped it from, cars are bad to use.

The_AirHawk · 11-02-2009, 08:46 AM

Quote:

Originally Posted by MOKE1K

Figured it would just be the fuse, but didnt know what you jumped it from, cars are bad to use.

Correction: a RUNNING car is Bad to use. A 12-volt battery is a 12-volt battery, is a 12-volt battery. It's the Charging System of a car that CAN overload an itty-bitty Voltage Regulator and associated wiring on a bike.

Glad the weak spot happened to be the fuse, in this instance. You were Lucky. Go play the Lotto before it rubs off - I hear a Million-dollars callin' your name..........

A Star Ride · 11-02-2009, 08:57 PM

thanks guys Im not a gamblin man but am apparently on a good luck streak

11-01-2009, 09:57 AM	#1
A Star Ride Registered Member Join Date: Oct 2009 Location: central Va Posts: 1,126	crossed jump cables what now? hello all, I made a dumb mistake and first killed batery then crossed cables trying to jump now I have nothing but a dead bike stuck 50 miles away (but safe) anyway its a 2005 Yamaha royal star tour deluxe and I dont know what I may have damaged or where to start from here any advice would be appreciated the only sign of any life is the spark when (correctly) connecting cables but no horn dash head or neutral lights. Ive heard about fusable links rectifiers volt regulators and a CDI? I'm petty capable of changing out any part thats bad if I know where it is, but no clue in diagnosing anything electrical. Also the cables were left connected for several minutes before noticing they were hot and smelled plastic, meanwhile I was trying to make sure I was in neutral, etc expecting to start it on a gravel incline Ill check back here or email to A_Star_Rider@comcast.net

11-01-2009, 10:43 AM	#2
mscuddy MODERATOR X Join Date: Jun 2007 Location: Next to my still checkin the temp. Posts: 5,444	Jeez, that's bad. Get yourself a DVOM (Digital Volt Ohm Meter) and start tracing wires from the battery, to the "ignitor" that controls the spark, etc. I had the grandfather to your bike, a 1980 Yamaha XS1100 Vision, and it had a rats nest of wiring with all the running lights, fairing, bags, etc. so I know how daunting your task will be. There are fusable links on modern bikes that prevent major damage to the electrical system in a morbid electrical failure, they look like a little rubber cylinder about 1/2 inch long, usually on the hot side of the wiring harness. Get a good 12volt car battery and connect it to the "hot" side of the soleniod. Then jump the starter soleniod by crossing the two "poles" with a screwdriver, have one of the spark plugs out, see if you're getting any spark. Also check your fuse box, the reverse-polarity thing might have not blown the fuses, but smoked the wires as they go into the fuse box. I've seen that before on old Kawasakis and Volkwagen beetles. When the harness smoked on my KZ750 I re-wired it for just the main stuff, ignition, charge circuit, headlight, tail light and turn signals. All I had was 14 gauge black wire, so I pity the poor bastard who has to re-wire the bike...hehhehhe Good luck. Don't let anybody try to talk you into soaking the bike in warm salt water for a week. Doesn't work (hear that Ken?). __________________ A gun is a tool, Marian; no better or no worse than any other tool: an axe, a shovel or anything. A gun is as good or as bad as the man using it. Remember that.

11-01-2009, 02:14 PM	#3
The_AirHawk Founding Member Join Date: Jun 2007 Location: Livin' in a Van: down by the Mariana Trench Posts: 10,891	Fusible links are just a "small" section of wire that's designed to melt, saving the harness further-down the line from going away. Basically, a "fuse", only not so easily-replaceable. Lights, fuses, wires, switches, even the starter-motor - shouldn't care which way current flows through them - HOWEVER, electronic-components such as voltage-regulators, the CDI Ignition, Hall-effect sensors (the crank sensor and/or cam sensor), EFI computer (if FI bike), possibly the fuel pump, anything like electronic trip-computers/fuel gauges, etc. - all of these will not like current running though them the "wrong way". EFI microprocessors are typically reverse-current diode protected on all their inputs and outputs - but other components on the ECM motherboard will probably NOT have any such protection, so it's possible to have a processor show A-OK connected to a diagnostic machine, but still be a "bad" ECU. I worked for a shop that had a kid install a battery backward in a Toyota - we replaced every bit of Electronics in the car: ECU, Radio, ABS Computer, Trip Computer, etc. Serious Suckage. I hope you are far luckier. __________________ *Parfois, on fait pas semblant* Sometimes, it's not pretend Oderint Dum Metuant Let them hate so long as they fear политики предпочитают безоружных крестьян Politicians Prefer Unarmed Peasants Nothing to see here, Citizen. Move along now...

11-01-2009, 02:47 PM	#4
seruzawa Robby Join Date: Nov 2001 Location: 8501 ft. Posts: 16,803	If you tried to jump from a car and had the car's engine running then you are likely to blow stuff even if you hook the cables up correctly. Lucky for you the Royal Star doesn't have all that sophisticated a system like, say, a BMW does. Then you would really really really be hosed. As it is if you get a DVM and start tracing all the wires and checking all the fuses as has been stated you will probably be okay. CDI ignition modules are pretty tough. Don't ask me how I know this. I'm trying to sound like an expert here. __________________ I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tanhauser Gate. All those moments will be lost in time, like tears in the rain.

11-02-2009, 04:40 AM	#8
MOKE1K Registered Member Join Date: Jul 2008 Location: Kalapana, Big Island Posts: 3,956	Figured it would just be the fuse, but didnt know what you jumped it from, cars are bad to use. __________________ "YOU CAN'T BOLT ON SKILL" "The only thing limiting your bike, is you" We survived Bush you'll survive Obama! "the most fundamental fact about the ideas of the political left is that they do not work. therefore we should not be surprised to find the left concentrated in institutions where ideas do not have to work in order to survive." --thomas sowell

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11-01-2009, 07:08 PM	#5
A Star Ride Registered Member Join Date: Oct 2009 Location: central Va Posts: 1,126	thanks for the input it was main engine fuse, I had origionally checked all fuses in the main box and they were OK but there was an alternate loction 30 amper so now after rain riding 40 miles now my truck is down there and I get to go after that YAY and I missed football and the dega race but it was $1.00 repair so I shouldnt complain

11-02-2009, 08:57 PM	#10
A Star Ride Registered Member Join Date: Oct 2009 Location: central Va Posts: 1,126	thanks guys Im not a gamblin man but am apparently on a good luck streak