I have a fuel pump switch currently installed in my car, but I have to replace it about every month and a half. I was just wondering if you guys knew what I'm doing wrong? I'm using 20amp switches. they seem to get really hot then melt, but they stay really cool, and seem to be okay up until the switch goes out? All I can think of is that it might be poor quality switches.
Thanks guys.

 

A.C. and D.C. ratings on switches are NOT equal!
Switches have different load ratings depending on the kind of power and voltage that they're used with. Generally speaking the a.c. ratings are always higher than the d.c. ratings. A switch rated at 120V @ 3 amps A.C. can handle around 12V @ 900 milliamps D.C. A fuel pump will pull about 10 to 15 amps so you need a fairly large switch.
rmc

 

i trying to do the same for my gsr. can u give the wire code for the fuel pump and location?

 

There is a much easier way to do this. Look under the dash on the drivers side for a grey box. This is the main relay which controls the ECU, Fuel pump, and other things. Cut the black ground wire and add in a switch. I did this to my integra and the switch and wiring has not burnt out and its been over 8 months. I will try and get pics if you cant find it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by theman-dlh &raquo;</TD></TR><TR><TD CLASS="quote">I have a fuel pump switch currently installed in my car, but I have to replace it about every month and a half. I was just wondering if you guys knew what I'm doing wrong? I'm using 20amp switches. they seem to get really hot then melt, but they stay really cool, and seem to be okay up until the switch goes out? All I can think of is that it might be poor quality switches.
Thanks guys. </TD></TR></TABLE>

hmmmm.... I see a slight problem with the......