Water temp guage

Post by **Matt** » Tue Sep 20, 2005 11:46 am

Where should I wire the live feed for a water temp guage to on a car with a gold faced speedo? it doesn't seem to have the voltage regulator like the black faced one!

Post by **pskipper** » Tue Sep 20, 2005 11:53 am

You can get senders for Mini's which haven't got a voltage regulator, don't know if that would bypass the problem?

Post by **Matt** » Tue Sep 20, 2005 2:43 pm

well it worked fine like that when the volatge regulator (on the bulkhead) was set to an open circuit reading of 12v..... then I changed it so it actually charged the battery...........

Post by **Willie** » Tue Sep 20, 2005 7:06 pm

If you do not have a voltage regulator then pick up the live feed
from the fuse which has all the green wires on it. connect to the
'green wire' side and it will work. you will get a variation on the
reading because it will not be constant voltage but it will work.

Post by **Matt** » Tue Sep 20, 2005 8:42 pm

Thats what I did to start with, it does work, it tells me its running at 110 deg c! (against the stop...) Can I take a voltage regulator of the back of one of the black speedos I have and wire that up? if so how do I need to do it?

Post by **Willie** » Wed Sep 21, 2005 8:12 am

Never done that ,but if you do,then note the side with the single
light green wire on it. This is the regulated side where you should take
the feed for your gauge from.

Post by **Matt** » Thu Sep 22, 2005 2:54 pm

but it should be possible and nothing should blow up or get very hot?

Post by **Willie** » Thu Sep 22, 2005 6:14 pm

Not if you do it correctly. The only problem I have heard of in
this type of installation is that the voltage stabiliser had burned out
because it could not handle supplying the fuel gauge AND the additional
gauge but this seems rare and,in your case, you will only be supplying
one gauge.

Post by **Matt** » Fri Sep 23, 2005 7:52 am

Excellent, something to try next week....

Post by **Pyoor_Kate** » Fri Sep 23, 2005 8:24 am

Aye, I've got my temp gauge coming off from the stabilised side of the voltage regulator (although, to be honest, none of the voltage regulators I've tried (I think I've been through three) - seem to give either a terribly stable or sensible voltage). But the gauge seems to read about right (it's probably underreading a touch).

Morris Minor Owners Club

Water temp guage

Water temp guage

Temp

regulator

regulator