I found alot of info on how to do the rewire for a 4g63 but nothing for 420A.I was also told not to use the diagrams for gs-t or spyder to rewire a 420A-T.Is there any diagrams to do the rewire on a 420A?

dastarfish

I know there are several guys on eBay who have re-wire kits. I am assuming they come with some sort of documentation.

Pick up some 8 or 10 gauge wire rated for automotive environments, a automotive relay, and fuse assembly and use the factory fuel pump relay to trigger the coil circuit. All fuel pump rewires are the same, the only part you need to use common sense is what pins you are using.

You need to search:

http://www.2gnt.com/index.php?d=Fuel%20Pump%20Re-wire

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2012 2500HD LML

I have everything I need to do the rewire.The only thing I couldnt understand was the 5th prong in the center of the relay.So I just dont use that prong?So its OK to hook it up just like you would on a gs-t?I asked the guy whom made the diagrams on how to do a rewire on a gs-t or spyder, if it was the same for the 420A and he said absolutely NOT!He confused the shit out of me.Well,my battery is in the trunk so it should make it easier.

dastarfish

Pin 87A on an automotive relay is for N/C connections, and when energized it opens the circuit.

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2012 2500HD LML

So I know I need to use the outer four prongs,what do I do with the center one?I'm not to good with electrical terms.

dastarfish

Read up on relays dude. Google is your friend.

www.autoshop101.com/forms/hweb2.pdf

http://www.the12volt.com/relays/relays.asp

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2012 2500HD LML

OK,I read through and I see how a relay works.But I still dont understand if I need to hook a wire to the center one or break it off.By the way,my name is Rob and my dog is Dude

dastarfish

Looking at the diagrams,I dont see a 87a.Do I have the wrong relays?

dastarfish

On the second link I provided you, there is clearly an 87A pin in the middle. As I mentioned it is for normally closed (N/C) circuits.

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2012 2500HD LML

I appreciate the lesson on how relays work.I just need to know how to hook it up, for dummies.

dastarfish

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2012 2500HD LML

Heh, talk to Corbin on that one, it is his Wiki Article :p

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2012 2500HD LML

So now would be a bad time to point out "the Internet" is a proper noun?

Originally posted by CODE4

Originally posted by dastarfish I just need to know how to hook it up, for dummies.

I do not know how to make it any more basic than the Wiki article I linked you. What more is there to explain?

dastarfish

Here at 2GNT we like to focus on giving people the tools to learn so that it guides them in the future during troubleshooting and rebuilding.

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2012 2500HD LML

Last of a dying breed...