Need Help choosing a relay
#1
Need Help choosing a relay
I have installed a 6 Circuit fuse panel to run my major accessories (O2, MSD Box, Elec Ignition, Ect..) I am running a 8ga Power line to it and want to trigger it on with Ignition. So I need a relay. I was thinking it should pull no more then 75-80amp. It needs to be rated for continuous use also.
Anyone have any ideas?
Anyone have any ideas?
#2
Re: Need Help choosing a relay
Most places that sell relays should have what you need.
Here's one from digi-key that is rated for 70A.
http://www.digikey.com/scripts/DkSea...=69861&Site=US
#3
Re: Need Help choosing a relay
http://www.txinel.com/relays_0332002150.asp I was thinking possibly that one.
#4
Re: Need Help choosing a relay
Really, you want a relay rated at ~100A (so at 70A its running at 85% of max.) for a bit of safety. Some of the items you've listed will create a large inductive loading. This tends to result in relay contacts welding themselves together. Once that happens, you can't stop your car.....
Its also worth installing an inertia switch in the line either from the ignition barrel, or the line running to your fuel pump. So if you have a big shunt, it will stop the car running on (starting a fire).
Just a bit of advice, hopefully of some use to you.
Its also worth installing an inertia switch in the line either from the ignition barrel, or the line running to your fuel pump. So if you have a big shunt, it will stop the car running on (starting a fire).
Just a bit of advice, hopefully of some use to you.
#6
Re: Need Help choosing a relay
Originally Posted by DrSeuss
Really, you want a relay rated at ~100A (so at 70A its running at 85% of max.) for a bit of safety. Some of the items you've listed will create a large inductive loading. This tends to result in relay contacts welding themselves together. Once that happens, you can't stop your car.....
Its also worth installing an inertia switch in the line either from the ignition barrel, or the line running to your fuel pump. So if you have a big shunt, it will stop the car running on (starting a fire).
Just a bit of advice, hopefully of some use to you.
Its also worth installing an inertia switch in the line either from the ignition barrel, or the line running to your fuel pump. So if you have a big shunt, it will stop the car running on (starting a fire).
Just a bit of advice, hopefully of some use to you.
#7
Re: Need Help choosing a relay
Wire it like its supposed to be, and put a relay on each one, its not that hard and I know you can do it!!!
just grab some connectors from the junkyard instead of using all female blade connectors. Thats how i've done 3 racecars. Just make sure to sauder everything
just grab some connectors from the junkyard instead of using all female blade connectors. Thats how i've done 3 racecars. Just make sure to sauder everything
#9
Re: Need Help choosing a relay
Try getting the glow plug relay for any diesel powered truck
NAPA sells this one, 85 chevy with 6.2L diesel.
http://www.napaonline.com/masterpage...low+Plug+Relay
for $17.95, and it's rated for under hood heat, and 100 Amps
NAPA sells this one, 85 chevy with 6.2L diesel.
http://www.napaonline.com/masterpage...low+Plug+Relay
for $17.95, and it's rated for under hood heat, and 100 Amps
#10
Re: Need Help choosing a relay
Originally Posted by gbryning
Try getting the glow plug relay for any diesel powered truck
NAPA sells this one, 85 chevy with 6.2L diesel.
http://www.napaonline.com/masterpage...low+Plug+Relay
for $17.95, and it's rated for under hood heat, and 100 Amps
NAPA sells this one, 85 chevy with 6.2L diesel.
http://www.napaonline.com/masterpage...low+Plug+Relay
for $17.95, and it's rated for under hood heat, and 100 Amps
That's a nice relay. Cheap, rugged, and high curren capacity.