electrical issues
 

My car has had starting issues for a while, and only starts recently when being jump started. Having ruled out a flat battery, I assume the other cause can be poor earthing.

I've been plumbing in a new dash and now it doesn't even turn over and makes wierd buzzing noises when you put the ignition switch on.

Another sympton is when I turn the fia switch on my indicatiors work fine and get 12v to the dash. When I turn the ignition switch on it only gets around 6v. Would this also indicate an earthing problem or something different ?

cheers
sean

I've done more testing and here's a better explanation of the situation.

FIA switch on
ignition switch off
indicators dash light work normally, receiving ~8 volts

when I switch the ignition switch on, then
indicator dash lights receive ~5 volts, then over a few seconds the voltage goes down to 0

I assume you've checked battery voltage and it's above 12.2V ish? If the car won't crank at all but then starts with jump leads on it can only be a faulty battery. I've seen several cars do just this. :)

And you have checked your battery terminals and earths to the car's body and the engine block, for tightness and cleanliness, haven't you?

Alcazar