Positive / Negative Earth Test

[CraigCerberus]

Hi,

How can I find out if my Herald is currently a positive or negative earth?

I am going to fit an alternator to the car as the dynamo died on me. The car has a radio fitted to it (a modern CD player) alreay, but with this on, lights on and wipers on the car just dies instantly.

I want to know how to test for positive or negative earthing so that I can make sure that when fitting the alternator that I am making sure it is running negative earth.

Thanks, Craig

[Gt6s]

2584 wrote:

Hi,

How can I find out if my Herald is currently a positive or negative earth?

I am going to fit an alternator to the car as the dynamo died on me. The car has a radio fitted to it (a modern CD player) alreay, but with this on, lights on and wipers on the car just dies instantly.

I want to know how to test for positive or negative earthing so that I can make sure that when fitting the alternator that I am making sure it is running negative earth.

Thanks, Craig

Look at your battery terminals /battery connection.
Could'nt be any easier.

[CraigCerberus]

To see if they are on back to front you mean?

[ferny]

To see which terminal goes down to earth (the cars body).

Dynamo to alternator isn't a direct swap. Have you looked into the other (simple) jobs involved?

[CraigCerberus]

Ok I'll have a look tonight.

I bought the full conversion kit from Rimmer's website £100 all in, so I thought I'd give it a go.

What are the other (simple) jobs you mentioned?

I am new to classic cars, this is my first. I was told they are a good starter car. I only paid £1000 for it, so i knew I'd have to do bits.

Thanks, Craig