Temperature probe for temp. gauge

Post by **picky** » Wed Dec 21, 2005 9:26 pm

Hello, some of you may have seen my morris listed for sale recently, but due to generous donation from a family member I can keep it! yay!

Im fitting a temperature gauge, a smiths electrical type, and I have the temperature probe from an old rover V8 manifold that came with some spare carbs. It has the correct thread and seals well in the morris minor cylinder head, but will it give sensible readings seeing as it is from a V8?
thanks for help,
Tim

Post by **Onne** » Wed Dec 21, 2005 9:41 pm

I don't think the amount of cylinders would matter much, I'd say try it! They are both 12V cars, so it should be all right, but do take care, is your car +ve or -ve earth?

hope this helps

Onne

Post by **picky** » Wed Dec 21, 2005 9:44 pm

hadnt thought about that... Im negative earth.. probably would rover v8 be negative too??

Post by **Onne** » Wed Dec 21, 2005 9:45 pm

What year is it?

Post by **picky** » Wed Dec 21, 2005 9:45 pm

its 1969...

Post by **Onne** » Wed Dec 21, 2005 9:46 pm

I don't know then.... I will try and find out

Post by **picky** » Wed Dec 21, 2005 9:47 pm

thanks for your help Onne! and lightening fast replies...

Post by **Onne** » Wed Dec 21, 2005 9:48 pm

I asked a helpline, originally it was a +ve earth car

Post by **picky** » Wed Dec 21, 2005 9:51 pm

Yes, I did the conversion myself, I didnt know any minors left the factory negative earth.. anyway Ill rig up the gauge when It arrives and see if it gives a sensible reading.

Post by **Onne** » Wed Dec 21, 2005 9:52 pm

My mate thought he knew... he doesn't, so you'd better try... sorry forthat

Post by **picky** » Wed Dec 21, 2005 9:53 pm

no problem! if it gives off smoke ill turn it off...!

Post by **Onne** » Wed Dec 21, 2005 9:54 pm

good point. but there must be more people out there who know more about these things. I have one in the car, and I can't remeber quoting +ve or -ve earth

Post by **picky** » Wed Dec 21, 2005 9:56 pm

maybe its past their bedtime

Post by **Packedup** » Wed Dec 21, 2005 9:58 pm

If the car's neg earth, and the guage is neg earth (I can 't remember if both terminals are insulated from the body or not), then it doesn't matter what the sender came out of! All it does is give more resistance when cold, and less when warm, it doesn't care which way the power is flowing through it

Post by **Onne** » Wed Dec 21, 2005 10:00 pm

probably... it's still quite early though

Post by **picky** » Wed Dec 21, 2005 10:01 pm

ah.. so its a thermisistor.. I see now. Ill just make sure there isnt a current surge when first connecting the battery after installing the gauge.

Post by **picky** » Wed Dec 21, 2005 10:03 pm

Is it just me or is the clock thatsays when the messages are posted an hour too fast??

Post by **Onne** » Wed Dec 21, 2005 10:07 pm

Not to me... but then I am an hour ahead of you!

Post by **picky** » Fri Dec 23, 2005 11:15 am

Emailed ESM spares about it and they say does not matter negative or positive earth, but has to be wired through voltage stabilizer, if you car is earlier than '63 then apparently you dont have the voltage stabilizer but they are only £5 from ESM...

Tim