understanding relays for hi-amp circuits - ARTICLE
#1
Join Date: Jul 1997
Location: Beautiful Hueytown Alabam
Posts: 5,664
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understanding relays for hi-amp circuits - ARTICLE
Hello there, friend...
are you tired of melting your wiring??? ... are you sick of smelling burnt insulation ??? ... do you dread turning on your headlights cause it makes your CD player slow down ???
is that where you are, bunkie ???
well friend... what you need is a relay! "A relay ??" you ask " what the heck is a relay ??? " you query... scratching your head in a quizzical way
just pay attention, buddy and read below......your prayers have been answered
http://www.clubfte.com/users/jniolon...ingrelays.html
later
John
are you tired of melting your wiring??? ... are you sick of smelling burnt insulation ??? ... do you dread turning on your headlights cause it makes your CD player slow down ???
is that where you are, bunkie ???
well friend... what you need is a relay! "A relay ??" you ask " what the heck is a relay ??? " you query... scratching your head in a quizzical way
just pay attention, buddy and read below......your prayers have been answered
http://www.clubfte.com/users/jniolon...ingrelays.html
later
John
#3
Did you read the fine print? You may get some things wacked with wet noodles.
John
There are some diagrams in my gallery of relay setups form the front lights - I stole them somewhere so if you use then blame Smedly_Dunlap.
#6
Join Date: Jul 1997
Location: Beautiful Hueytown Alabam
Posts: 5,664
Received 716 Likes
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257 Posts
after talking with someone much more intelligent than I, I've changed the wording with figure #8 to say that the best place for a fuse is between the power source and terminal 30 as the picture shows (but the words don't reflect accurately)
this fuse location will give you protection if either the device or the relay fail (which isn't that uncommon)
everything else is the same
John
this fuse location will give you protection if either the device or the relay fail (which isn't that uncommon)
everything else is the same
John
#7
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#8
Good article!
I didn't see any brand names mentioned specifically, but the terminal numbering seems to be based on Bosch relays. I'd just like to point out that in the Euro car world, Bosch relays are considered POS and the cause of many a problem. I've had to open up several of them and they are absolutely the cheapest made stuff you can imagine. I don't know who is better (probably japanese, like Denso or Nippon Electric) but avoid Bosch!! Especially for high-amp stuff.
I didn't see any brand names mentioned specifically, but the terminal numbering seems to be based on Bosch relays. I'd just like to point out that in the Euro car world, Bosch relays are considered POS and the cause of many a problem. I've had to open up several of them and they are absolutely the cheapest made stuff you can imagine. I don't know who is better (probably japanese, like Denso or Nippon Electric) but avoid Bosch!! Especially for high-amp stuff.
#9
#12
#14
Thanks John, that will be handy. You really need an understanding of the bosch relay to troubleshoot most any modern high draw accessory. (My definition of modern being most anything newer than you)
Modifying my headlights to use relays was one of the best electrical improvements on my truck.
Modifying my headlights to use relays was one of the best electrical improvements on my truck.