Gareth Dickens Posted June 12, 2007 Share Posted June 12, 2007 I seem to have a bum voltage regulator on my instruments (fuel and temp gauge) on my SIII. I have gotten a new one but I am a bit worried that my wires are swapped ( thus killing my voltage regulator). The old regulator had 4 pins (2 bridged pairs) of which 2 had a B next to them and the other an I. Is this B for Battery and I for instrument? My manual is not very clear on this section. The new regulator has no markings. Are these regulators polarity sensitive? Please help Quote Link to comment Share on other sites More sharing options...
rslandys3 Posted June 12, 2007 Share Posted June 12, 2007 I seem to have a bum voltage regulator on my instruments (fuel and temp gauge) on my SIII. I have gotten a new one but I am a bit worried that my wires are swapped ( thus killing my voltage regulator). The old regulator had 4 pins (2 bridged pairs) of which 2 had a B next to them and the other an I. Is this B for Battery and I for instrument? My manual is not very clear on this section. The new regulator has no markings. Are these regulators polarity sensitive?Please help As a general rule power goes out of sockets and into pins. So the spade type connectors on the regulator are for the battery. Thats the way it is on mine anyway. Quote Link to comment Share on other sites More sharing options...
Gareth Dickens Posted June 12, 2007 Author Share Posted June 12, 2007 As a general rule power goes out of sockets and into pins. So the spade type connectors on the regulator are for the battery. Thats the way it is on mine anyway. Sorry for clarity- male or female to battery Quote Link to comment Share on other sites More sharing options...
rslandys3 Posted June 12, 2007 Share Posted June 12, 2007 Sorry for clarity- male or female to battery The male (on the regulator) goes to the battery I think Quote Link to comment Share on other sites More sharing options...
tiagoc Posted June 12, 2007 Share Posted June 12, 2007 this reminds me i have to change mine, too... could a change of the alternator (to a 70Amp one) be the reason, for it not showing correct readings on the fuel and temp gauges? (sorry for the thread-hijack, Gareth) Quote Link to comment Share on other sites More sharing options...
rtbarton Posted June 12, 2007 Share Posted June 12, 2007 this reminds me i have to change mine, too...could a change of the alternator (to a 70Amp one) be the reason, for it not showing correct readings on the fuel and temp gauges? (sorry for the thread-hijack, Gareth) As long as it's a 12 volt alternator it shouldn't effect the instruments. The point of the regulator is to supply a constant voltage output over a range of input voltages. (Actual the output is a squarewave, but the effect is the same) Don't forget that the regualtor needs a good earth. Quote Link to comment Share on other sites More sharing options...
Gareth Dickens Posted June 21, 2007 Author Share Posted June 21, 2007 Still need some info. Happy with the voltage regulator but need a detailed diagram or discription of the wiring from the voltage regulator to the fuel and temp gauge. Please assist. Quote Link to comment Share on other sites More sharing options...
tiagoc Posted June 21, 2007 Share Posted June 21, 2007 hope this helps: Green lead, between 35amp fuse #8 (at 23) and the voltage stabilizer (at 29) connects to terminal "B" Light Green lead, between the voltage stabilizer (at 29) and both gauges (at 35 and 36) connects to terminal "I" (if the wires in your instrument panel are like mine, there's no Green or Light Green leads... just a mix of pieces of wires in every possible color ) Quote Link to comment Share on other sites More sharing options...
Gareth Dickens Posted June 23, 2007 Author Share Posted June 23, 2007 Yes thanks a lot. Just one more thing. The reduced voltage from the regulator - does it go to the top or bottom lug on each gauge? The ground through the fuel sender and temp sender will then connect to the remaining lug. Quote Link to comment Share on other sites More sharing options...
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