I am not liking the current setup with the k2rd harness so here is my question: I just bought a 30amp relay and an inline fuse holder. The plan is to just go from the battery dirrectly to the fuel pump with the fuse followed by the relay to and then to the pump. This all seems fairly simple except my one question is this: For my trigger do I just want to use the 12V ignition signal? I was going to do the standard fuel pump rewire for a stock car but figured that since I'm going to be having a FMIC put in next week I just want the stock relay setup out of there. On that note, does anyone know if I just have to remove the plugs and call it good or do I have to splice a few wires together there to make it work?

On a side note, I want as little wiring as possible. I am not worried about the voltage dropping when the car idles to 9, unless that is what the haltech does.

 

I just studied the wiring diagram for the E6X and see that their relay (not the same as mine) hooks up the same way but has a feed for the 12V ignition and a feed for the fuel pump trigger. I'm running the radeo shack 275-226 relay which shows hooking up a 12v in, 12v out, ground, and on/off. Should I just use the fuel pump trigger that the haltech uses and not have an ignition hook up?

 

Oh come on...

45 seconds on google.

RTFM. Next time search

http://haltech.com/downloads/e6x_wiring_diagram.pdf

 

The K2RD harness adapter actually does not use the haltech relay. It uses the stock relay setup which is where my problem enters in. I was looking to see how the trigger system works since I'm looking at a 4 wire relay instead of a 5 like the haltech uses (with 1 dead pin). My 4 wire relay says that it needs to be grounded to the chasis but the factory diagram (which I had already looked at) shows something different. The question was to figure out if the wire coming out of the haltech was a ground or a voltage wire.

 

1) Do you know how a relay works?
2) If you can read the haltech diagram, you'll note the fuel relay eventually gets kicked into a fuse block powered by the main power relay. However it gets switched by pin 23 on the unit.

Even though K2RD raped the harness, you can follow that lead to the pin on the harness. According to haltech, its a yellow/black wire.

I personaly would bypass the clusterfack of wires and run the constant for the relay straight to a fuse block and bypass the rest of the haltech wiremess. But the switch is going to have to be switched (prefeably) by the ecu, not an ignition-switch source.

You know... I noticed you didn't mention why you were doing this? I'm assuming the K2RD harness actually interfaces the fuel pump and cuts out the fuel pump resistor relay. In turn... is there really much benefit of running new lines other than the satisfaction that another system is running on aftermarket wire?

I would be amazed if the k2rd harness doesn't interface the fuel pump...

 

The K2rd harness is an adapter that basically uses the stock fuel pump wiring. The car is having a lot of starting problems and I wanted to eliminate the factory wiring for the fuel pump and it's relay setup from the equation. I ended up using the power source for the activation part of the relay with the 12 volt ignition and the haltech's black/yellow wire.