Autometer Monster Tacho

[OREX]

I've tried searching the forums but I can't get a straight answer. I want to run a monster tacho in my R32 GTS-4 RB20DET. I'm told the standard tacho won't hook up to the wires because the computer runs 8 volts and the tacho needs 12 volts. Is this true? I have a wiring diagram and I'm all set to go but i don't want to damage anything. Can anyone help me with this? I'm in Melbourne if anyone cares...

Thanks guys,

George.

[B-Man]

Run the 12 volts from your ignition, Earth is ground

The signal wire (usually green) on the autometer goes to the RPM output of your ECU.

There's prolly a white wire that goes to your lights too

I just installed an Autometer (Autoguage) Tacho in my R33 GTS-t and no problems at all.

[OREX]

Thanks B-Man, I was going to try that way too, done it on 6 cars I owned, but people seem to think there's other stuff involved. Like to hear from R32 owners especially, in case it's different to R33's.

[Jimbo2000]

moved

[OREX]

Moved to where? Sorry, didn't know where to post this. Has anyone got any other solutions?

[wld808]

the only part of your tacho that even needs voltage is the backlight. if the comp runs 8 volts it doesnt matter since all you are using is the rev wire.

[OREX]

thanks for your opinion man, that sounds fair enough, doesn't seem like you could damage anything from that setup. Interesting...

[rsx84]

i had a problem hooking up my tacho to the rb20det ecu, i followed the instructions and hooked all the wires up correctly power,earth and ignition. i had a problem with the ecu tacho wire its self, when i connected the tacho pulse wire to the green rpm signal wire from the tacho itself all that would happen is the tacho would go to 3000rpm and just sit there?? the car is a the auto electrican at the moment getting some other things fixed so i'll get them to look into the problem?

[B-Man]

Gotta make sure you set the tacho for a 6 cylinder.

[rsx84]

Gotta make sure you set the tacho for a 6 cylinder.

i did all that, cut the brown wire with in 2 seconds or you'll blow the engine :Bang: , i think its the ecu thats my problem.

[OREX]

thanks again fellas, interesting feedback. I'll trial fit it to the computer and see if it works, before I drill holes in my car. And I'm not ungrateful for the replies but I still want more replies if possible because clearly there are different views on this.

Thanks again-

George.

[sikdylan]

Can you hook the tacho up to the stock tacho pulse wire in the back of the dash and if you can which wire is it

any help would be great

Run the 12 volts from your ignition, Earth is ground

 

The signal wire (usually green) on the autometer goes to the RPM output of your ECU.

 

There's prolly a white wire that goes to your lights too

 

I just installed an Autometer (Autoguage) Tacho in my R33 GTS-t and no problems at all.

[sikdylan]

can you hook up the tacho to the standard rev pulse wire in the dash and if you can which wire is it

[rsx84]

if you have a pin output diagram ( www.rb20det.com ) your looking for pin 7 for the tacho output wiresplice into that anywhere for a signal...