Aftermarket Tach question

Coupe Devil · 06-30-2002, 05:33 PM

I bought a tach for my truck. The ignition is just like a 87 tp 93 GT. But my coil only has two wires coming out of. I hooked the tach lead to both of the wires and the Tach read backwards with both connections. Got any ideas. The wires that are coming off the coil are red and one is orange. Got and ideas?????????

Brad

PKRWUD · 06-30-2002, 05:46 PM

Your tach should have 4 wires:
red, black, green and white.

The red wire from the tach goes to a 12v source that is powered through the ignition switch (preferably to the fuse box). The black tach wire goes to ground, and the white one goes to a lighting source, like splicing it into the ashtray lamp.

The red wire going to the coil is probably positive, but just unplug the coil, and shine a flashlight into where the harness plugs in. There will be a + and a -. Which ever one is negative get's the green wire from the tach.

Take care,
-Chris

Coupe Devil · 06-30-2002, 05:53 PM

Chris, check your pm's hehehe

Brad

PKRWUD · 06-30-2002, 05:57 PM

IM me on AOL

PKRWUD · 06-30-2002, 06:02 PM

CHECK YOUR PM's

Coupe Devil · 06-30-2002, 06:07 PM

ok

Brad

06-30-2002, 05:33 PM	#1
Coupe Devil Moderator Join Date: Mar 2001 Location: Myrtle Beach SC Posts: 1,643	Aftermarket Tach question I bought a tach for my truck. The ignition is just like a 87 tp 93 GT. But my coil only has two wires coming out of. I hooked the tach lead to both of the wires and the Tach read backwards with both connections. Got any ideas. The wires that are coming off the coil are red and one is orange. Got and ideas????????? Brad __________________ 1990 GT, 347, TFS TW Heads, TFS Cam, TFS Track heat, Twin turbos, FMIC, T5. Built Ford Tough Moderator

06-30-2002, 05:46 PM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Your tach should have 4 wires: red, black, green and white. The red wire from the tach goes to a 12v source that is powered through the ignition switch (preferably to the fuse box). The black tach wire goes to ground, and the white one goes to a lighting source, like splicing it into the ashtray lamp. The red wire going to the coil is probably positive, but just unplug the coil, and shine a flashlight into where the harness plugs in. There will be a + and a -. Which ever one is negative get's the green wire from the tach. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

06-30-2002, 05:53 PM	#3
Coupe Devil Moderator Join Date: Mar 2001 Location: Myrtle Beach SC Posts: 1,643	Chris, check your pm's hehehe Brad __________________ 1990 GT, 347, TFS TW Heads, TFS Cam, TFS Track heat, Twin turbos, FMIC, T5. Built Ford Tough Moderator

06-30-2002, 05:57 PM	#4
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	IM me on AOL __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

06-30-2002, 06:02 PM	#5
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	CHECK YOUR PM's __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

06-30-2002, 06:07 PM	#6
Coupe Devil Moderator Join Date: Mar 2001 Location: Myrtle Beach SC Posts: 1,643	ok Brad __________________ 1990 GT, 347, TFS TW Heads, TFS Cam, TFS Track heat, Twin turbos, FMIC, T5. Built Ford Tough Moderator

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