Vehicle & Technical > Series Land Rovers

Negative earth

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MuddyMachine:
My series 11 is still positive earth I was told to that you can chage it to negative earth  by turning the batt round connecting the earth to the negative, then tap the live cable 4 or 5 times onto the positive terminal. this changes the dynamo somehow and you now can fit an altenator. Making ithe vehicle negative earth.

Is this true? thought I would ask before I try as Im not upto speed when it comes to electrics

mark.yellow.series.3:
no i dont think so,

i think there has to be modifcations to the alternator, and maybe some other things.

rich p should be along soon to help, hes just done his.

Rich_P:
Yes I'm here.  Firstly, Mark... A Series Alternator never worked with positive earth. ;)  The dynamo is what can run on either positive or negative earth.

It's been a few months now since I got mine done, but this is what I remember.

Firstly, disconnect the battery.  Then you need to reverse the small wire connections on the coil (I think).  Reconnect the battery, but have it with the earth as negative.  Then feed a cable from the positive to the dynamo terminal and tap it three times.  Each time you should get a small spark.

Reconnect the battery fully and turn on the ignition... it should work unless I've missed some thing(s) out.

Paul Woodward:
It's the field terminal (the small one) that you need to "flash" to re polarise the dynamo. Yes you do need to swap the coil terminals round.

MuddyMachine:
Cheers gents,

Does this effect any of the electrics on the vehicle, like ignition, lights and dash stuff?

Can i connect other electrical items(eg spot) as I would on a normal neg earth vehicle?

Cheers again

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