SR400 regulator

[bungbung]

What state is your battery in? Some old bikes cannot regulate the voltage with a bung battery, = blowing bulbs all over.

[Wired1]

What state is your battery in? Some old bikes cannot regulate the voltage with a bung battery, = blowing bulbs all over.

The battery is about two weeks old. The battery in the bike when I bought it was bone dry, I tried filling it and charging it but it was burgered, so I bought a new one.

[XRKID]

The battery is about two weeks old. The battery in the bike when I bought it was bone dry, I tried filling it and charging it but it was burgered, so I bought a new one.

Tried mounting my vf750r regulator and it is too big thus pushing the fairing up. Sorry im gonna have to keep the sr500 one.

[Wired1]

Thanks, I was lucky enough to get one off xerxesdaphat. I've got the bike apart for powdercoating so it will be a couple of months before I get back to this point again. I did find a number of intermittant shorts in the loom when I stripped it down so I'm sure this was what killed the old one.

[rok-the-boat]

I had a DT175 that blew its regulator. New price was crazy so I went to the library and fugured out how to make one. Can't remember exactly, but I think I had a few zenner diodes in line on a piece of ally. It worked fine and cost almost nothing.

[rudolph]

Test the 3 yellow wires at the stator side with a malty meter and see if any of them are earthing,

I have found in a few cases if the regulator/rectifier is suspect the stator can shagged to, but in your case you might be lucky :P