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I too installed a Sunpro II in my '94 XE, following the write up and it works perfectly.
Thanks.
 

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ok so i hooked it up to the blue black wire like the guide said, and i'm getting no reading...will it hurt if i try the blue/white wire like you?
this is coming from the ECu on the right side(passenger with that plastic shield gone(one metal screw and one plastic)

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tach install b15

Hi guys,

has anyone ever installed a tachomoter to the 2001 b15 sentra xe ? I researched the b15 thread and I did not find any informationregarding the install. I happened to find the write up for the car mentioned (b13) in this forum and I hope anyone can shed some light on my install.

I have the Sunpro Super tach 2 mini I have no problem with the red, black, and white wires but I cannot seem to find the rpm signal that connects from the car to the (green) wire. According to the instructions the signal wire is the blue wire with the orange stripe I tried connectin there but I got no signal.

i then tried connecting to the engine control module where the blue wire with orange stripe originates but i had no luck there (something about pin#32).

my last option is the coil but I dont know where or what the coil looks like. if any one can help me that would be great.

thanks in advance everyone.
 

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Great write up! I plan on doing this this week when i make my auto parts store run for an exhaust gasket. I'm going to pick up a tach and pillar mount while i'm there, some plastic epoxy and paint, sandpaper, and also for the wiring i'm going to splice all the wires into a computer style 4-pin "molex" connector for easy removal if i ever want to.

Thanks for this great write up. Did mine last night. Took about 3 hours, for me.
I was a little lost as to which blue/white wire it was, but i found it.
Check it out!
Wish my gas gauge read the same thing right now. Tach doesn't look bad there either.
 

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Help

ok so my friend and i were going to install a tach we spliced it into the ignition coil. seemed to work fine. i leave and less than a mile out my engine cuts off. i try to start and it cranks but wont start. so i do some troubleshooting and get frustrated so i cut all the wire and splice the green back together, still nothing. i check the fuse box under the hood and the "engine cont" fuse is blown. i go and buy another fuse and it starts up. about a month later it blows again, buy another and it starts up about 2 or 3 days after that it dies, i put another fuse in and now it wont start at all, still cranks tho. i tried re-splicing with no luck. am i missing something its becoming really frustrating!

Any help i can get will be great! thanks!
 

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I decided to get a small 'cheapo' tach off eBay to install. It's 2" face is perfect for what I wanted and looks good. The dash pad is already cracked in several places, so I didn't feel bad about putting a hole in it to run the wires down behind the center dash part, where the radio and all is located. Hooked the power wires to the cigar lighter, since it turns off with the key, and the back light wires to the cigar lighter light. No problems doing that. The fun was finding the correct wire for the tach signal. There are a few wires on the ECU that are identical but run to different places. After about 6 tries to find the right wire, I finally found the light blue with white stripe wire. It's like a Carolina Blue. Finally it worked. I even had the ECU out, and yeah that was fun to get out. Nissan made sure that wiring harness was never gonna vibrate out! Those wires are small like 18 or 20 ga, so be careful when pulling on them. Anyway....so on the way to work this morning I was going along at 4K rpm at 65 mph in 4th gear, because 5th doesn't work. That looked about normal so no worries there. By the time I had gone 20 miles the tach had slowly dropped down to 3K rpm at the same speed. Just great. Well....it was only $12 lol what do you expect? At least all the wires are already run and I can fish them out a bit through the hole on the dash pad for a different tach that will hopefully work better. Live and learn....again haha.:D
 

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Well....on a hunch I decided to try something. I disconnected the tach signal wire from the blue w/white stripe wire from the ecu, and connect it directly to the coil signal wire. Now the tach works fine! At least it's nice to know that the tach is ok, but why did the other wire not work out? Many other people didn't have, or didn't say, that they had any problems with it. It would be nice to have all the wiring inside the cabin, but it's the Hooptie so doesn't really matter.
 

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This write-up is for the Nissan Sentra XE. 2door or 4door.

I did quite a bit of searching, only write-up I could fine consisted of the cluster swap, not really an individual aftermarket tach install. There were some "help me!" posts, but here's the answer. :)

Suggested tools:
Electrical Tape
Phillips Screw Driver
Drill (Sorry, don't know what size bits you need off hand)
Wire splicer (I used a pocket knife)

Before you get started with mounting the tach onto the car, you need you remove the passenger side's kick panel. This is located on the floor board, by your feet, on the side of the center console. It's held in by a metal screw, and a plastic screw. Once removed, you have some working room to access the ECU.

Ensure you have your car turned off, and the negative battery wire removed. Safety first, just in case. ;)

The ECU, has quite a bit of wires coming out of the front with a plastic shield protecting the plug-in. It's a silver box, hard to miss.

Remove the plastic shield. You'll notice a bundle of wires wrapped by a protective sheath, made of cheap plastic. Simply expose the wires a little, and dig around looking for a Blue/White stripe wire. Once located, strip the wire. I didn't bother cutting the wire at the ecu, I just "hijacked" it. This wire is the tach signal (you didn't even have to go for the ignition coil!), that was intended for the SE-R, but was left in by Nissan for the XE.

Next, we'll get the power source, dim, and ground.

Remove the center console's cover, the same one that surrounds the cd player, up front center. I believe there's 6 screws to this, doesn't take long. Once unscrewed, you have to remove the shifter boot on the bottom, and pop it out. Careful, the Defroster, and Hazard lights are plugged into this! Just located the plug in the back, and remove, easy to do.

Now, for the power/ground/dimmer, we need to use the rear defroster. Don't worry! The rear defroster will still work after this!

The plug that went into the rear defroster button, consists of 3 wires we'll be "hijacking", the yellow wire (power), black wire (ground), and the red/blue stripe wire (dimmer). Strip each wire for the install.

Now, mount the tach where you'd like, and run the wires (I put the tach's wires behing the center console to hide, and it looked nice. :)), to the sources. The green wire (common, tach signal wire), goes to the ecu blue/white stripe wire. Wrap the wire into the one you striped, and wrap in electrical tape. The red wire (common, power wire), goes to the yellow wire from the defroster. Wrap the wire to the yellow wire, and cover. Black of course, goes to the grounding wire, which is thankfully... black! The White (dimmer wire), goes to the red/blue stripe wire. After everything is covered in electrical tape... reconnect negative battery wire, and turn the key!

I think I have everything included!
is this the same for a base model Sentra?
 
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