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WallRocket

Member Since 18 Feb 2013
Offline Last Active Yesterday, 11:14 PM
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Posts I've Made

In Topic: Wallrockets Datsun 620 (Sr20det round 2)

15 December 2017 - 10:09 AM

Welp. Tired now, I will updated and edit it later.


In Topic: Wallrockets Datsun 620 (Sr20det round 2)

15 December 2017 - 09:45 AM

I have had a few people been asking about my wiring. Its just the way I did it, i am not liable if it doesn't work out for you. 

 

 

This is for the gauges. Simply tap what you want and run it to desired gauge. 

(My truck, i didn't use any of these wires.)

 

These wires are located by the ECU, and are usually white or brown plug. The way I wired my truck, i didn't use any of these wires, just thought they would be helpful to some. 

Z7hYOq.jpg

 

Here is what you will be looking for, for above wire colors. Usually a white or brown flat plug. S13 Nissan 240sx guys use the term, "Dash interface plug" IGNORE THE WIRE COLORS IN PICTURES. 

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Brown is a DOHC chassis dash interface

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White is a SOHC chassis dash interface

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First Step 1. 

Now, you have a 3 pin O2 sensor plug, it needs to be extended about 4 inches on either side (you choose) This plug will have a BROWN/Yellow, BROWN, and WHITE wire.

Here is what the O2 sensor wire looks like. 

 

ZaKpqM.jpg

 

Second Step 2.

You will need to extend the MAF wire. This will have a shield loom signal wires (2) dont be scared of that. Find a nissan 240sx OEM harness and cut the MAF wires from it (or any 2 wire shielded MAF wire from any car really) There will be 3 wires, Black, white, and black white stripe, just extend them 3ft, yes, 3ft. So the maf wire can run across the fire wall and around to the driver front of the truck. 

rLwz2J.jpg

 

SR WIRE COLOR FUNCTION 

Black / White +12V (Power)

Black MAF Ground

White MAF Signal

 

9ah2zm.jpg

 

I used a Z32 maf sensor. 

FOR Z32 MAF USERS, THE PINOUT IS: (ECU retune is required)

6JkyIR.jpg

 

 

Third Step 3. 

Cut and put power where it needs to go into the OEM sr harness. No need to cut open the harness, etc etc. Just cut the power interface pigtail off. Here is what the power interface plug looks like. (See Figure 1a. below) Now that you have cut the pigtail off, you will see a few wires you need to run the sr20det in your truck, Thick blue/red stripe, Thick Black/Red stripe, Red, brown, black/yellow stripe, Black/White stripe, red/black stripe See figure 1b. You don't need any other colors! You will need to wire in 2 or 3 Relays in the location of the passenger side/center cab of truck.. I can't explain how to wire in a relay, but i am sure you can figure it out.

 

 

 

Figure 1a.

vyeE8w.jpg

 

Figure 1b.

SR Wire Color

 

ECU Relay --- Red / Black stripe 12v Switch Power --- Wire to Relay 1 12v Switched

ECU Power ---Black / White stripe 12v Switched Power ---Wire to Relay 1 12v Switched

ECU backup power --- Red 12v Switched Power Relay 1 12v switched

 

Main ignition power

Black / Red
Blue / Red
 Connect Wires together. 12v switched/Relay 2 12v Switched

 

Brown Any +12V Switched O2 sensor power

Black / Yellow stripe Any +12V Switched Idle air control solenoid power

 

Black / Pink stripe Not Used. Fuel pump relay

Green / Orange stripe Not Used. Transmission neutral switch

Green / Yellow stripe Not Used. AC relay

Blue / Green stripe Not Used. AC relay

 

oyYRH9.jpg

 

          

 

 

Here is the "Relay panel i fabricated up" You can do it how ever you wish, just make sure they are FUSED, and have power supply off a relay. 

wk0g7W.jpg

 

 

ROUTING IN THE ENGINE BAY

(Update later with pictures of the routing i choose)

Requires cutting hole bigger and some sort of rubber grommets to prevent the sheet metal from rubbing threw the harness on fire wall. Runs as it would in the Nissan 240sx, ecu mounts to the kick panel of truck, and the power interface wires run any where into cab you wish, i ran mine to the center console. 

 

Gauges!

Water Temp

Tap and drill OEM water neck for sending unit. Then run wire to your gauge of your choice. 

 

3W8AsA.jpg

 

FsSduo.jpg

 

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Tachometer

You will find that the oem dash interface wire WILL not output a aftermarket gauge signal wire. (It did this for me anyways)

You will need to TAP PIN number 30

n37e3A.png

 

I haven't got to the Speedometer as of right now. 

 

 

NOW! YOU HAVE A UPPER HARNESS THAT WILL RUN THE SR20DET!

Jz3z1I.jpg

 

 

*****I will brush up on the LOWER harness later on.****** 

Its pretty Simple.

Remove thick starter wire, and loom back up. 

Plug in the OEM sr20 lower harness into the trucks OEM harness. 

 

1. Starter wire, just plug trucks starter wire into sr pigtail sr lower harness, no need to cut open lower harness, just tap what you want off the sr pigtails. 

2. Alternator, Thick (+) Terminal to starter (+) Terminal. Then just 12v switch the white with red stripe wire. 


In Topic: Wallrockets Datsun 620 (Sr20det round 2)

14 December 2017 - 10:43 PM

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Battery box installed

NAwDuP.jpg

 

I got some cheap hood pins until i get some areolatch style hood pins.

On250r.jpg

 

It actually made it about 1 mile drive to my work =) I made a video, but i will see how well it came out before i post it. 

22kokp.jpg


In Topic: Wallrockets Datsun 620 (Sr20det round 2)

13 December 2017 - 07:00 AM

Yea. I just drilled 3 little holes into them and screwed them to the grill. 

 

 

Anyways. Here is my long waited driveshaft! It was only $300 with new U-Joints! 

rybu8B.jpg

 

itRFl3.jpg

 

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Crap air filter for now. This required losing the horns/relocating horns.

yjxkEU.jpg

 

 

 

AND...COOLANT LEAKS EVERYWHERE. lol

One under the intake

nN1U2P.jpg

 

and one turbo coolant line leaking. 

LDEFsd.jpg

 

And..back together, waiting for new line supplies to make a new line for the turbo.

 scp16h.jpg

 

So the truck is waiting one 1 line, hood pins, and some gauge holders to be back on the road. This will make it a 2 month long swap. Most of it was waiting on parts unfortunately. 


In Topic: Wallrockets Datsun 620 (Sr20det round 2)

07 December 2017 - 12:44 PM

Just drill a little hole and a few self tappers. 

BcdUzE.jpg

 

New emblem...well new to me. I am going to refinish it of course. I like the yellow in it. 

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This front is looking sexy. 

AMuJe2.jpg

 

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