![](http://www.bom.gov.au/products/IDR732.loop.shtml#skip) Ayr Queensland Australia 4807 | I would say it is the voltage regulator in the alternator , and not the above kit.that kit was installed to stop burning out the wire due to back feed.
I have never had a full understanding why it does it but a small diode in the wire does the same job.also ensure your alternator body is well earthed to the engine block |