Trying to figure out how many switches I need for my car. Street class, allmotor.


So far I have figured I need-

One switch for gauges(digital)

One switch for fuel pump

One switch for lights

One switch to power up the ECU, Ignition, brake light, line lock, and alt


Does this sound about right? Been racking my bran and this is all I could think of that would require a 12V source, am I or could I be missing anything?


Thanks.

 

I never understood the need to put all of these things on switches. Isn't that why relays were invented? Just use an ignition relay, so that when the car is switched "on", all of these things turn on by themselves. The only switch I have is for the rad fan so I can switch it on when the ignition is off, if I want to cool the motor in the pits without the rest of the loads drawing from the battery.

 

i have 2 in my car, the ign switc and the main batt cut in the back.

i will be putting the fuel pump on a dedicated circuit, and a manual override on my cooling fan.

my gauges are powered with the car.
but on the same note if you are making a full race car that is completely guttes, then yes you need to look at a switch panel to control your stuff.

 

Yes, track only. I am working with a shell so it has 0 wiring in it currently.

 

I heard you should always have as many switches as stickers on your car.

 

you dont want you fuel pump on a switch.... let the ecu control it. you want a prime then shut off till engine speed is recognized.

 

bitches love tha switches

 

I would put the gauges on your ecu switch because you most likely are always going to want them to work when the ign. is on right?

I personally like a switch for my fuel pump. This gives you more control. Say if you want to spin the motor with no fuel or you need to turn the ign. on for some reason and do not want the pump to run you can do all this.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ninesecrx &raquo;</TD></TR><TR><TD CLASS="quote">I would put the gauges on your ecu switch because you most likely are always going to want them to work when the ign. is on right?

I personally like a switch for my fuel pump. This gives you more control. Say if you want to spin the motor with no fuel or you need to turn the ign. on for some reason and do not want the pump to run you can do all this.</TD></TR></TABLE>

I like that as well, but I also like for the ecm to control the fuel pump for priming then rpm signal so i let the ecm control the fuel pump relay, but run the relay control side through a switch so it is on all the time but i can kill that circuit if i need to dry crank the engine, etc...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jared &raquo;</TD></TR><TR><TD CLASS="quote">

I like that as well, but I also like for the ecm to control the fuel pump for priming then rpm signal so i let the ecm control the fuel pump relay, but run the relay control side through a switch so it is on all the time but i can kill that circuit if i need to dry crank the engine, etc...</TD></TR></TABLE>

Works for me

 

I prefer to run mechanical pumps no fuel pump switch/relay for me. But, I would run my pump on a seperate switch if I did run one. I agree with mike, sometimes if your trying to check readings on your ems, such as sensors and such, you don't want the pump running. I probably wouldn't do this on a street car though.

 

I guess for me, for those few occasions, I can just pull the fuel pump fuse, or turn it off in the EMS.

 

so turn the output to the fuel pump off through the motec. J/K guess i am spoiled.

 

"16"

I just could not let this topic get away without this one...

Pdang

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by G2K &raquo;</TD></TR><TR><TD CLASS="quote">I prefer to run mechanical pumps no fuel pump switch/relay for me. But, I would run my pump on a seperate switch if I did run one. I agree with mike, sometimes if your trying to check readings on your ems, such as sensors and such, you don't want the pump running. I probably wouldn't do this on a street car though.</TD></TR></TABLE>

True, but you still need a switch, it is just in the form of a cable operated one to close a shutoff valve.

 

The only switch you should have is the ignition switch...your key switch. IT looks cool and racey but its just more stuff you have to worry about...keep it simple.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PHDZINE &raquo;</TD></TR><TR><TD CLASS="quote">The only switch you should have is the ignition switch...your key switch. IT looks cool and racey but its just more stuff you have to worry about...keep it simple.</TD></TR></TABLE>

I dont currently have a key switch/ignition switch.


So what I gathered is I can run 1 switch for lights, 1 switch for fuel pump and 1 master switch for everything else+key start or push start.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bambooluv &raquo;</TD></TR><TR><TD CLASS="quote">"16"

I just could not let this topic get away without this one...

Pdang</TD></TR></TABLE>

Dang beat me to it. That is exactly what I was thinking LOL!