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Here is a good detailed site to show you how to hook up everything to test
your guage.
http://mgaguru.com/mgtech/electric/fg_01.htm
IMHO, you still have a sending unit problem, be sure all the connections are
good on you test leads. On my sending unit, when it did not work, I found
the very fine coil wire had broken loose from the solder joint, added a
short length of wire and resoldered & Bob's your uncle!
Bill B
'58 TR-3A TS/30766 L
The car is in a 'zillion' pieces... but I think about it every day!
-----Original Message-----
From: triumphs-bounces+wbeech=flash.net@autox.team.net
[mailto:triumphs-bounces+wbeech=flash.net@autox.team.net] On Behalf Of
60TR3A
Sent: Saturday, January 12, 2008 3:31 PM
To: Triumph car discussion Sports
Subject: [TR] TR3 Fuel gauge test
Well I ordered a new sender unit from Moss & when I tested fresh out
of the box I got 0 Ohms resistance no matter where I moved the float.
But given that the resistance device sits down in the gasoline I thought I
would try in in my 2/3s full tank. Still getting 0 Ohms.
Before I called Moss I wanted to test the gauge as well. So I thought I
would go down to the local Radio Shack & buy a couple of resistors to check
it out as well. Since the gauge is supposed to show full at about 70 Ohms I
thought I would try to get something close to 70 & something around 35.
Given I took my last physics class 40+ years ago any advice would be very
much appreciated.
John
John A. Wise
Glendale, AZ
1960 Triumph TR3A
Commission No: TS80422L
http://members.cox.net/60tr3a/
http://www.triumphowners.com/876
1977 Porsche 911S
http://members.cox.net/porsche911s/
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