polarity switching questions

Post by **rusty_68** » Sun Sep 17, 2006 3:50 pm

well basicaly whats needed to be done to convert from positive earath to neg earth on my 68 it has an alternator if that makes any difference

as I need some sounds and I already have a phillips headunit and changer I just need to sort the wireing

Post by **Onne** » Sun Sep 17, 2006 4:42 pm

If it has an alternator, it is possibly already -ve earth. Have a look in Technical tips on the LHS of the page.

Since your car is (possibly) a panda car, could you have a look at the chassisnumber and the engine number?
The last of the panda cars had alternators as standard, used of course for the extra load of the siren and lights, when catching thieves!

Post by **8009STEVE** » Sun Sep 17, 2006 4:52 pm

Look at the battery conections. See which one goes earth.

Post by **rusty_68** » Sun Sep 17, 2006 5:07 pm

it's deffo positive earth as its marked on the earth wire by the previous owner

do you need the whole chassis no ?

Post by **Onne** » Sun Sep 17, 2006 5:10 pm

Just the bits before the / I think, but the engine number complete if you have it.

Post by **rusty_68** » Sun Sep 17, 2006 5:32 pm

the engine number is 10ma-ukl294756
I'll grab the chassis numer in a bit as the v5 only has 7 numbers

Post by **Onne** » Sun Sep 17, 2006 5:44 pm

Are you sure about the K in the engine number?

Post by **rusty_68** » Sun Sep 17, 2006 5:54 pm

I got that number off the v5 but it could be wrong though I'll check it properly in a bit

Post by **Onne** » Sun Sep 17, 2006 5:56 pm

I have trouble finding the info I normally use, so please do take your time

Post by **rusty_68** » Sun Sep 17, 2006 6:23 pm

well I've just checked both nos for you
vin is m/a2s5
and the engine is 10ma-uk l294756

Post by **Onne** » Sun Sep 17, 2006 6:24 pm

Well, I have found something at last, but I am not 100 sure about its correctness.

10MA-U-LP is a police spec nr. Something with a P anyway

Post by **rusty_68** » Sun Sep 17, 2006 6:27 pm

Ooh does that mean its a fast one

I know the head has been converted to unleaded

Post by **Onne** » Sun Sep 17, 2006 6:41 pm

Just a standard 1098 with alternator I think. Did you find the number on the engine?

Post by **rusty_68** » Mon Sep 18, 2006 12:51 am

yup on the alloy tag I'll grab a pic in the morning

Post by **Onne** » Mon Sep 18, 2006 9:04 am

Excellent

Post by **rusty_68** » Mon Sep 18, 2006 9:50 am

here you go

Post by **pskipper** » Mon Sep 18, 2006 12:18 pm

Not sure what the K stands for but the L means it's a low compression engine and therefore likely to be the original one. Police cars tended to be low compression as then they could run on 2 star

Post by **rusty_68** » Mon Sep 18, 2006 1:50 pm

what a shame I just sold all my metro turbo spares I could have made it fun with a dump valve :lol

Post by **rusty_68** » Thu Sep 21, 2006 9:45 am

so does anyone know whats entailed in makeing it neg earth ?

I vaguely remember being told its a simple job of flashing it to be the way I want but I dont remember with enough detail to go out and do it
I need to convert as I have a whole heap of smiths gauges and I want a rev counter and temp gauge aswell as a stereo and an alarm as my area sucks and the security of the moggy make my mini look secure since I use my mini keys on the minor 99% of the time

Post by **pskipper** » Thu Sep 21, 2006 10:26 am

http://www.mmoc.org.uk/technicaltips/Ne ... Earth.html