TOPIC:

Is that running?
Steve

The coils should not make any audible noise. They are just a primary coil of wire and a secondary coil of wire.

Going back to your battery...I think you said you were measuring 12.2 volts? That's a bit on the low side. My batteries measure about 12.9 volts and both batteries are more than 5 years old. Have you considered a new battery?

I am by no means a person to ask about or give information on electrical issues anymore. I will say this much, you have to be absolutely certain you have a GOOD battery to start with or you just chase your tail in locating electrical problems. I now am a bit anal in many regards, but I always replace my motorcycle batteries at the 3 year mark. Batteries lead a hard life in my area with winter and storage and then coming back to endure Lord knows what summer temps. So even if they appear good I still replace them for peace of mind.
Rick H.

I have a thread on this battery topic. I installed a new AGM battery and all the gremlins disappeared. Even if the battery will start the bike, it may be causing all kinds of mayhem. Also bad connections.
Steve
kzrider.com/forum/4-electrical/611280-ad...water-to-the-battery

Most auto parts stores and probably all battery specialty stores will load test the battery for free.
Even if the battery shows more than 12vdc at rest, once under load, it may have much less if there are internal shorts. Even a new battery can be bad.
I recently went through this on my ZRX. The starter would crank just fine, but the engine would not start. After trying to blame it on my poor mechanical skills, I finally hooked up my meter to the battery. It had about 12.5vdc at rest. I turned on the key and hit the starter button. The meter immediately dropped to about 7vdc, not nearly enough to power the ignition.

Brand new AGM battery. Changed it at 2 amp overnight. Then charger automatically turns to a trickle charger for maintenance. I will test voltage is evening

Steve no testing I’m doing is not running. I’m confused as to why voltage drops so much when the dyna pick ups are powered.

I’ve gone through and cleans as many connections as I can find. Including all bullet and the pin connectors at the electro plate. Checked the fuses and tested voltage across them also. Everything test out within a half volt. Until I Power the dyna pick ups. Then voltage to coils drops about 1.60 volts

I will get the battery tested to either eliminate it or replace it.

Even with all the testing I have been doing the at rest voltage of the battery hasn’t dropped below 11.55 volts. And I played with it last night for several hours trying all different combinations of power supplies to the coils and pick ups.

My Dyna S and coils are power hogs.
Steve

SWest wrote: My Dyna S and coils are power hogs.
Steve

Maybe that’s the norm and I don’t have a problem. What voltage do you get at the coil primary’s

Mine at rest ignition on, the coil primary voltage is about 1.60 volts less than battery

If you are testing with the ignition on but engine not running then you will see a higher voltage than when the engine is running. The voltage will drop a bit in a running system because current has to run through the wires and meets some resistance in them.

all testing has been done with ignition on but not running... busy today never had a chance to get the battery tested... I have it in my car and will get to the local battery shop for a test...

Good new and an update. Battery checked out. Not impressed but is good. I’m going to replace just because of what I learned today. It is a Scorpion purchased through battery stuff. Com. I purchased 2 batteries a few years back and one lasted 6 month and died over winter even with a battery tender on it. The second lasted just over a a year. This will be the third battery in a little over 2years. I’ve read where Swest has had similar issues. Here’s what I was told today, this information comes from a company that rebuilds batteries and seemed very knowledgeable about the product. The scorpion battery is not a true AGM. It is a lead plate acid sealed battery. He called it a highbred. It is more designed for handicap scooter applications where it is drawn down and then re-charged. This type of battery does not like to be constantly charged. Also he says the batteries sit on their shelf activated for long periods of time before sold because of the quantity they purchased them in. The one I bought just a few months ago was dated 2018 it was over a year old before I even received it. He suggested a Magnapower brand battery. He said they are identical to batteries installed in current model Harley Davidson’s and built in the USA. they run down the same production line as the Harley battery but this one is labeled MagnaPower. He sells them for $81 and they are a true AGM battery. I’m tossing the scorpion even though it’s good and going with the recommended MagnaPower battery.