I did the swap and nothing changed. wtf?! i used one from an 86 regal, new, cross checked part numbers and ears size, same as the 92 buick someone else used. printed out diagram and took it outside and followed it to a t. is there something wrong with my electronics? alt is good and it still sits at 12.5-13 v. and gauges seem to have a draw on them when some other eletric thing is on (headlights radio ect). when i turn the headlights on, the voltage goes up a little and the rpm also goes up? ideas please!! I need you opinions.

 

What did you expect to happen?

 

Good one. Most peoples volts and rpms go down. What's the problem? Voltage output should be reading, 14-14.5, though.

 

thats the prob. it still is reading 12. maybe i should just be happy it works. thanks though.

 

r the wires from the 12a motors diff from gsl-se wires. i have done the same thing and i get a small buzz from the alt. do u have to upgrade the battery too

 

bump

 

Try adding a thicker gauge cable from the alternator post to the battery, 10G should do the trick

 

does anyone no if the wires r the same for a 12a 13b. meaning i have a 85 se and get a small buzz from the new alternator this is with the 2 wire hook up as they say to do but 1 is just sitting there. and what would 10g do by chance. and do u have to go to a bigger battery with this kind of mod

 

The wiring would be the same with the SE. From 80-88, all RX-7s used the same alt wiring. You don't need to upgrade the battery. The alt is just capable of producing more current than stock. The heavy gauge wiring just eliminates using the old stock wiring and creates less voltage drop between the alt and the battery. I used 8 ga. on my SE with the S5 alt.

When you guys check your voltage, what are you using? I know the voltmeter on my car reads about 1 volt low. You need to use a voltmeter/lmultimeter to really test it.

 

i still have the same batt and i will go a head and get bigger wire.

 

This isn't a performance mod, it gives you more electrical ability to operate accessories. You should be able to run a big stereo, A/C, spot/fog lights, DVD etc without drawing too much power.