Aftermarket tach wiring
 

Ok, so I bought a Sunpro tach from AutoZone. Its got a 4 wire hook-up, power, ground, illumination, and RPM signal. Got everything wired up, it get power, but no RPM needle swinging activities. I wired it to the Blue RPM signal on the dizzy, but it didnt work...any suggestions? The tach could be ---- to...It did come from AutoZone.

Re: Aftermarket tach wiring
 

wire it to the rpm signal wire from your cluster....there should be one

Re: Aftermarket tach wiring
 

STD, no tach. thats why I had to buy this rice ass HomoZone tach.

Re: Aftermarket tach wiring
 

Tach wiring was up to the cluster in my dx w/o tach

Re: Aftermarket tach wiring
 

thats what i'm saying jago....just cus the car doesn't have a tach doesn't mean they take out the wire that sends the signal from the ecu to the cluster connector

Re: Aftermarket tach wiring
 

you have power or illumintion ? you prolly picked a bad power source hook it up to something thats always running when the car is on or something

Re: Aftermarket tach wiring
 

my toyota, every ford ive owned, all have the wiring, they just omit the trace on the cluster

Re: Aftermarket tach wiring
 

I have both, just dont have RPM pickup.

cool, I assumed that the STD chassis harness didnt have a RPM signal wire. Thanks. That wire will still be blue? Im going schematic hunting after I post this.

Re: Aftermarket tach wiring
 

With or without tac the wiring is the same and its under the cluster been there done that on my 90 hatch base model.

Re: Aftermarket tach wiring
 

the blue wire????

Re: Aftermarket tach wiring
 

yes, no..? I got a big ass gash in my left hand, I cant go out there and just dick around. still schematic hunting lol

Re: Aftermarket tach wiring
 

What year is yours?

http://www.redpepperracing.com/techn...geViewsIndex=1

This is for a '92 and it says it's blue.

Re: Aftermarket tach wiring
 

1990. im fixing to check out that link, thanks.

Re: Aftermarket tach wiring
 

make sure that the tach is in 6 cyl mode. sort of like how on autometers, you have to cut both of the loops

Re: Aftermarket tach wiring
 

6cyl mode? Ok, I'll try it...

I rewired it twice, got a new one, smae problem, So i'll switch to 6 tommorow and see what happens. WTF would 6 work for my i-4? just curious.

Re: Aftermarket tach wiring
 

Tach shot, swaped it out at AutoZone with another one, wired it back up, works fine. 4 cly mode FTW, 6 has me idling at 2000 rpms.