actual wiring up the tach - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

hybrid240 · 09-08-2003, 01:50 AM

will the doch cluster (91-93 analog) plug n play in my 90 harness or is there some rewiring? if so what? if it is cheaper to get the doch custer to work than a big tach, ill do that. plus its on the low.

F3600 · 09-08-2003, 07:38 AM

I think the plug will match but your tach will not work. You need to swap it with one from a SOHC. The signal from the speed sensor is not the same ...

someone can clarify this ?

but i think the rest of the cluster will work fine...

kazuo · 09-10-2003, 05:46 PM

search search search

KA24E/CA18DE/CA18DET do not use the same tach signal as KA24DE/SR20DE/SR20DET

If you have KA24E and are swapping a SR/KA24DE you need the KA24DE tach so you can swap out the KA24E tach. A SR20DE/DET tach will also work.

You can swap out the whole cluster, but its illegal (then again your motorswap is also illegal, so whatever). Also I am not sure that it will be plug and play.

If you have a digital speedo you are effectively ****ed. Get a aftermarket tach or take a SR20/KA24DE tach and a CA18/KA24E and swap the guts.

or you can tap the CAS wire. (20 i think?) either way, using method one will result in the tach being off by about a grand below 5k, and off by a little less than 200 or so past that. the CAS will result with it being off also all the time but i dont know by how much.

good luck

DJ Machine · 09-10-2003, 05:51 PM

heres what you do, cut the plug off the KA harness and wire it to the SR harness (just match the colors), that way itll still be plug n play

hybrid240 · 09-11-2003, 06:31 AM

i must not have been real clear. i already know that my tach doesnt work with my sr. everything else works fine. my question was what rewiring. in my search i couldnt find the actual rewiring. it seems no one has done it.
DJ that sounds like it would work. ill probably just end up getting a tach that matches my other gauges.

09-08-2003, 01:50 AM	#1
hybrid240 Leaky Injector Join Date: Jan 2002 Location: louisville, ky Posts: 79 Trader Rating: (0) Feedback Score: 0 reviews	actual wiring up the tach will the doch cluster (91-93 analog) plug n play in my 90 harness or is there some rewiring? if so what? if it is cheaper to get the doch custer to work than a big tach, ill do that. plus its on the low. __________________ boostin through a neighborhood near you!

09-10-2003, 05:51 PM	#4
DJ Machine Zilvia Junkie Join Date: Jan 2002 Posts: 549 Trader Rating: (0) Feedback Score: 0 reviews	heres what you do, cut the plug off the KA harness and wire it to the SR harness (just match the colors), that way itll still be plug n play __________________

09-11-2003, 06:31 AM	#5
hybrid240 Leaky Injector Join Date: Jan 2002 Location: louisville, ky Posts: 79 Trader Rating: (0) Feedback Score: 0 reviews	i must not have been real clear. i already know that my tach doesnt work with my sr. everything else works fine. my question was what rewiring. in my search i couldnt find the actual rewiring. it seems no one has done it. DJ that sounds like it would work. ill probably just end up getting a tach that matches my other gauges. __________________ boostin through a neighborhood near you!

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09-08-2003, 07:38 AM	#2
F3600 Zilvia Junkie Join Date: Apr 2002 Posts: 364 Trader Rating: (0) Feedback Score: 0 reviews	I think the plug will match but your tach will not work. You need to swap it with one from a SOHC. The signal from the speed sensor is not the same ... someone can clarify this ? but i think the rest of the cluster will work fine...

09-10-2003, 05:46 PM	#3
kazuo Post Whore! Join Date: Aug 2002 Location: Posts: 2,762 Trader Rating: (3) Feedback Score: 3 reviews	search search search KA24E/CA18DE/CA18DET do not use the same tach signal as KA24DE/SR20DE/SR20DET If you have KA24E and are swapping a SR/KA24DE you need the KA24DE tach so you can swap out the KA24E tach. A SR20DE/DET tach will also work. You can swap out the whole cluster, but its illegal (then again your motorswap is also illegal, so whatever). Also I am not sure that it will be plug and play. If you have a digital speedo you are effectively ****ed. Get a aftermarket tach or take a SR20/KA24DE tach and a CA18/KA24E and swap the guts. or you can tap the CAS wire. (20 i think?) either way, using method one will result in the tach being off by about a grand below 5k, and off by a little less than 200 or so past that. the CAS will result with it being off also all the time but i dont know by how much. good luck