Board Logo

No power to coil
BrisDubba - January 31st, 2009 at 03:43 PM

Okay so in fixing one problem I created another...

Whilst repairing an exhaust leak in the c/buggy I took the coil off and a few necessary wires to access the inlet manifold. Fixed that up and put everything back together and now I cant get any power to the coil. I have checked all the wiring three times and it seems fine. When I hotwired the coil, it started first go.

So I went back to start from the switch and power is fine there, but then it goes to that ballist resistor thingy - which is very hot to touch. All of my other dubs are fitted with the inbuilt resistor in the coil so comparisons are not easy. If I had left the key on power whilst working on the car (which I dont think I did but am struggling for answers, could that have cooked it ?)

All the fuses are fine, just the resistor is very hot to touch.

Any ideas ??

Peter


matberry - January 31st, 2009 at 05:38 PM

Have you wired all corectly?
Why a balast resistor?
You must have a wrong coil fitted. Balast resistor is for a 9 volt coil in a 12 volt car with the appropriate wiring to suit which an a/c volksie does'nt. Look at the under side of your coil, it should have stamped what voltage, but we'll assume it's 9v.

Black goes to coil +ve, but in your case to one side of the balast resistor and the other side to the coil +ve.
Green from your points/condensor, to the coil -ve.

Thats it.

To test with a test light that a circuit exists, with the points open and ignition on, the test light should light when leads put accross the points gap.
If not poss coil , condensor or wiring problem.


grumble - January 31st, 2009 at 07:11 PM

The country buggies never had a resistor coil originally, perhaps the resistor has spat the dummy,if so turf it out and fit a good old original style coil.


MickH - January 31st, 2009 at 07:37 PM

Ballast resistors get hot..it's what they do!! If it's hot it's working....as long as the "spring" isn't earthing out to metal where it's mounted.Remove the resistor and put a standard coil on.:tu:


BrisDubba - January 31st, 2009 at 08:34 PM

I went and confirmed it is a 12 volt coil. The car will start fine if I bypass the original wires - I will investigate some more tomorrow.