help!- smoked 2nd set of dyna s pickups

[hb1 fan]

k7 old school chopper with the elctrics all stuffed into the little chrome box under the carbs. A fresh bottom and 836 kit, new dyna S and matching coils. Had it running and rode it to sort out the jets. I left the charger on it with the ignition "on" overnight and it has never been right since. I put in a second  Dyna S and while trying to start, it smoked it. If I trashed a coil with the overcharging would this burn the dyna S units?
 The hot wire for the bike comes from the starter solenoid to the only fuse(20a) then through the ignition(key switch). Should the fuse be before or after the switch?

Any help would be appreciated?

Rick

[Spitfire]

Too hard for me I'll let Steve take charge of this one.

Cheers

Den

[SteveD CB500K0]

If you mean me Den, then I've very little (ie none) experience with Dyna.

Leaving the ignition on with the battery on charge will subject the electrics to up to 14.5V as opposed to the more normal 13.2-ish when charging on the alternator.

I can't believe that that would fry a Dyna?  You should ask them. Or you could speak to Jeff Saunders at Z1 Enterprises in the US - he's an SOHC-er and very helpful. www.z1enterprises.com