AEM 30-4900 Wideband failsafe gauge question.
#1
Staging Lane
Thread Starter
AEM 30-4900 Wideband failsafe gauge question.
Getting ready to wire this gauge in and it has the tach/RPM wire to data log your Rpms,,, Where would be a good place to tap into to get signal?? Also the gauge has a failsafe low side (ground) input, what could I tap into to kill engine if it reads out of the user set operating window.
Here's a link to instructions if it will help.
http://aemelectronics.com/files/inst...fe%20Gauge.pdf
Here's a link to instructions if it will help.
http://aemelectronics.com/files/inst...fe%20Gauge.pdf
#3
Staging Lane
Thread Starter
Ok. Thanks for tach pin out. It's also got a failsafe so if the car goes lean you can cut power to engine so it won't cause damage... I saw a install on a mustang and they hooked the failsafe up to the pcm so it cut power to it and shut it down. Any help on the failsafe.
#4
Moderator
Looking at the wiring diagram for a '98 Camaro, I see a fuse for each bank of injectors. You might consider tying both banks together and running that through a relay to one 15A fuse (15A for both banks should be plenty). Then let your AEM control the relay. Completely shutting off the injectors if the AFR goes out of range should be safe.
Hey, just one idea, perhaps there are better ones.
Hey, just one idea, perhaps there are better ones.
#5
TECH Resident
iTrader: (10)
Just trying to plan my failsafe gauge install. What did you end up doing? Would it be better to cut the power to the coils instead? Cutting fuel with boost doesn't seem like a good idea. I guess if its all at once it probably can't hurt anything. Im surprised more people aren't using this for safety
#6
TECH Veteran
iTrader: (1)
Just trying to plan my failsafe gauge install. What did you end up doing? Would it be better to cut the power to the coils instead? Cutting fuel with boost doesn't seem like a good idea. I guess if its all at once it probably can't hurt anything. Im surprised more people aren't using this for safety