SOHC --> SR20 wiring question (pics included) - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Rusker · 08-06-2006, 10:56 AM

I'm finally getting around to getting the wiring done on the 240. It's been a few months since I've last worked on the car so I'm trying to remember all this shit.

I'm using the frsport.com's wiring guide. My question is on their install guide they show that you cut the SR harness and replace it with the KA section. Easy enough..

My SR harness has 3 plugs like it shows in the photo from the guide..

My KA harness only has 2 or the 3 plugs. Just ignore the orange/grey plug?

Thanks in advance. :thumbsup

Jamesnutt · 08-06-2006, 11:31 AM

http://heavythrottle.com/ Read the install facts section.

Mike

nrg · 08-06-2006, 04:01 PM

yes you ignore that last 3rd plug. cut and solder on the KA ends. or just repin the sr side. it's all up to you. I also removed all the extra crap that's on the harness. they're used for inspection/services.

fico · 08-07-2006, 10:52 AM

i just did my swap this weekend and i havent started on the wiring yet but i have been reading about it and i was wonderign what kind of wire to use to extend it?

g6civcx · 08-07-2006, 11:26 AM

The most helpful thing you can do is follow #1 in my sig. Follow the wiring diagram in the KA FSM and figure out where it's supposed to go. It will help you figure out which wires need to line up with the SR.

There is an SR ECU pinout floating around on the 'net. Search for it. Then you can put the two together using the instructions that HT provides you.

fico · 08-07-2006, 12:00 PM

i know wich ones to extend and i found the pin out but what i was asking ( i was in a rush before and didnt articulate myself correctly) is what grade/type of wire do i use when extrending the wires? and should i be able to find it at radio shack?

g6civcx · 08-07-2006, 12:25 PM

I understand your question now. You don't really need to add any wire length. Just snip and reconnect them to each other. There are several ways of doing it. The best way is to simply pop them off the connector using a tool (or a safety pin) and reposition them back in to the connector at the correct orientation. No splicing necessary.

The two plugs snap together. If you can get the pins to line up you're good to go.

If you want though, you can lengthen them as necessary.

When extending wires, use at least the same gauge wire size, i.e. same at least the same thickness or thicker wire.

You can always clip a small section off and bring it to Radio Shack with you. Tell them it's for 12V automotive application. They should be able to help you find the appropriate gauge and type.

nrg · 08-07-2006, 06:53 PM

14-16 gauge is what most of the wires use.

08-06-2006, 04:01 PM	#3
nrg Zilvia FREAK! Join Date: Mar 2004 Location: CA Age: 40 Posts: 1,571 Trader Rating: (1) Feedback Score: 1 reviews	yes you ignore that last 3rd plug. cut and solder on the KA ends. or just repin the sr side. it's all up to you. I also removed all the extra crap that's on the harness. they're used for inspection/services. __________________ driftingisgay.com

08-07-2006, 06:53 PM	#8
nrg Zilvia FREAK! Join Date: Mar 2004 Location: CA Age: 40 Posts: 1,571 Trader Rating: (1) Feedback Score: 1 reviews	14-16 gauge is what most of the wires use. __________________ driftingisgay.com

08-06-2006, 10:56 AM	#1
Rusker Zilvia Junkie Join Date: Feb 2004 Location: Washington Posts: 351 Trader Rating: (0) Feedback Score: 0 reviews	SOHC --> SR20 wiring question (pics included) I'm finally getting around to getting the wiring done on the 240. It's been a few months since I've last worked on the car so I'm trying to remember all this shit. I'm using the frsport.com's wiring guide. My question is on their install guide they show that you cut the SR harness and replace it with the KA section. Easy enough.. My SR harness has 3 plugs like it shows in the photo from the guide.. My KA harness only has 2 or the 3 plugs. Just ignore the orange/grey plug? Thanks in advance. :thumbsup __________________ 1990 S13/SR20

08-06-2006, 11:31 AM	#2
Jamesnutt Leaky Injector Join Date: Aug 2003 Location: Independence,MO Age: 44 Posts: 59 Trader Rating: (0) Feedback Score: 0 reviews	http://heavythrottle.com/ Read the install facts section. Mike

08-07-2006, 10:52 AM	#4
fico Leaky Injector Join Date: Jul 2006 Location: Akron Ohio Age: 37 Posts: 119 Trader Rating: (0) Feedback Score: 0 reviews	i just did my swap this weekend and i havent started on the wiring yet but i have been reading about it and i was wonderign what kind of wire to use to extend it?

08-07-2006, 11:26 AM	#5
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	The most helpful thing you can do is follow #1 in my sig. Follow the wiring diagram in the KA FSM and figure out where it's supposed to go. It will help you figure out which wires need to line up with the SR. There is an SR ECU pinout floating around on the 'net. Search for it. Then you can put the two together using the instructions that HT provides you.

08-07-2006, 12:00 PM	#6
fico Leaky Injector Join Date: Jul 2006 Location: Akron Ohio Age: 37 Posts: 119 Trader Rating: (0) Feedback Score: 0 reviews	i know wich ones to extend and i found the pin out but what i was asking ( i was in a rush before and didnt articulate myself correctly) is what grade/type of wire do i use when extrending the wires? and should i be able to find it at radio shack?

08-07-2006, 12:25 PM	#7
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	I understand your question now. You don't really need to add any wire length. Just snip and reconnect them to each other. There are several ways of doing it. The best way is to simply pop them off the connector using a tool (or a safety pin) and reposition them back in to the connector at the correct orientation. No splicing necessary. The two plugs snap together. If you can get the pins to line up you're good to go. If you want though, you can lengthen them as necessary. When extending wires, use at least the same gauge wire size, i.e. same at least the same thickness or thicker wire. You can always clip a small section off and bring it to Radio Shack with you. Tell them it's for 12V automotive application. They should be able to help you find the appropriate gauge and type.