subarurx yo Posted May 10, 2012 Share Posted May 10, 2012 ive searched and cant seem to find a diagram showing where the volt guage, temp, and vss is, out of the two round plugs for the guages, im finishing my ej swap, i already have it running, its a 87 rx Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 10, 2012 Share Posted May 10, 2012 Voltage isn't messed with - it should already work. That gauge pulls it's reading from the cluster power source. Maybe you meant to ask about hooking up the alternator? VSS is generally pretty easy to trace - just follow the wires from the hall effect sensor on the speedo to where the speedo bolts to the circuit board. Then follow the traces to the connector and determine which pin they come out on. It's probably a yellow wire with a red trace. Temp you shouldn't have to mess with - just connect the wire from the EA engine's temp gauge sensor to the EJ temp sensor. It will read low but it will work. Basically if the gauge gets up to half-way it's overheating. GD Quote Link to comment Share on other sites More sharing options...
subarurx yo Posted May 10, 2012 Author Share Posted May 10, 2012 ok , and thanks again for all the help. Quote Link to comment Share on other sites More sharing options...
Numbchux Posted May 10, 2012 Share Posted May 10, 2012 I like to grab tach, vss, and temp right at the gauge. This is scanned from my Chilton's manual and should all of that http://www.numbchuxconversions.com/Files/FSMs/Loyale%20Instrument%20Panel%20Wiring.pdf Quote Link to comment Share on other sites More sharing options...
subarurx yo Posted May 10, 2012 Author Share Posted May 10, 2012 i do believe my alternator is working, i used a volt meter and connected to thhe batt. and the volts slowly climb between 12 and 13v Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 11, 2012 Share Posted May 11, 2012 Should be 14.0 to 14.5v if the alt is working properly. GD Quote Link to comment Share on other sites More sharing options...
xbeerd Posted May 11, 2012 Share Posted May 11, 2012 Should be 14.0 to 14.5v if the alt is working properly. GD sorry to hijack, but would you say alternator down around 13v-13.2v should be replaced? Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 11, 2012 Share Posted May 11, 2012 sorry to hijack, but would you say alternator down around 13v-13.2v should be replaced? If you are getting that reading directly off the back of the alt then yes it's not charging right. That's a full volt low. If you are registering that at the battery then you could just be seeing voltage drop from the alternator to the battery so recheck at the back of the alt. GD Quote Link to comment Share on other sites More sharing options...
subarurx yo Posted May 12, 2012 Author Share Posted May 12, 2012 yep alt. is bad lights went very dim and engine stalled and wouldnt start up. i tested volts on the alternator where the big white wires connect and 8.2v at idle and about 6v at higher rpms so gonna have oreillys test tomorrow to be positive and get a 96-99? one and convert connector for higher amps Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 12, 2012 Share Posted May 12, 2012 95 to 98 is the best bet. The reason we do that is they are only $75 at the dealer due to a dealer initiated reman program for a recall campaign in those years. Make sure you have switched power to the yellow wire on the alt like we talked about - if you don't the alt won't charge. You also need the field flash wire hooked up through the idiot light in the dash or the alt will not charge. If you have the gauge cluster disconnected the alt will not work.... Insure that you have it hooked up correctly before you determine the alt is bad. GD Quote Link to comment Share on other sites More sharing options...
subarurx yo Posted May 12, 2012 Author Share Posted May 12, 2012 my bad lol i dont have idiot light hooked up since i couldnt figure out which wire to hook to and figured i didn't need it since i have a guage Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 12, 2012 Share Posted May 12, 2012 It's the field flash circuit so you need the light - or at least a 12v ignition switched source. GD Quote Link to comment Share on other sites More sharing options...
subarurx yo Posted May 12, 2012 Author Share Posted May 12, 2012 ok thanks ill try that and see what happends Quote Link to comment Share on other sites More sharing options...
subarurx yo Posted May 12, 2012 Author Share Posted May 12, 2012 it works now:D Quote Link to comment Share on other sites More sharing options...
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