tach suggestions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71-longbed · 10-25-2004, 01:19 AM

Im just curious where to hook my "keyed power" wire (red wire) ... i want something under the dash but easily accessable ... Maybe a terminal on the fuse box ??

lets see if im headed in the right direction

green wire ----> neg. terminal on coil ..

black wire -----> any ground (suggestions)

white wire -----> ?

any and all suggestions / help would be sweet ... its an aftermarket tach that was given to me ....

thanks !!!

djracer · 10-25-2004, 01:21 AM

dash light

71-longbed · 10-25-2004, 01:35 AM

ok .. help me out alittle ... where exactly should it go ?

Tx Firefighter · 10-25-2004, 07:26 AM

There will be a switched 12v terminal of your fuse box for your power wire. Use as test light and make sure it's powered with the key on, but not when the key is off.

68w/sbc406 · 10-25-2004, 04:50 PM

i think i wedged my tach light wire under one of the wedge bulbs sockets, but you could splice it in to the dash harness wire for the lights

lukecp · 10-25-2004, 05:33 PM

For my white wire i tapped into the wire feeding the light behind the heater controls. Green wire went to the dizzy, red wire went to the IGN UNFUSED terminal in the fusebox. The black wire i put a spade terminal on, and put under the screw holding the steering collumn in where it goes into the dash. Make sure you clean the area real good so you get a good ground. You can really just connect it to any old screw, the whole truck is grounded.

Also a good idea to buy a inline fuse holder when tapping into the IGN UNFUSED terminal in the fusebox, being that it is of course unfused and you can burn your truck down if your not careful.

Longhorn Man · 10-25-2004, 09:50 PM

see the spaid coming out under the word cluster feed? If you put a femail spaid connector on your white wire, and plug it into that, it'll work with the light switch and no splicing required.
Ignition unfused in the upper right would be a good place for the red wire.
As far as grounds, I like using one of the bolts that hold the plate under the steering column...never had a problem there.

71-longbed · 10-26-2004, 01:49 AM

You guys ROCK !!! .. thanks a million ...

landon4421 · 10-26-2004, 12:53 PM

I just spliced my light wire into the back of the dash. That way when I used the dimmer switch, my tach would dim with the rest of the lights in the truck !

71-longbed · 10-26-2004, 03:10 PM

well i hooked it all up .. and no dice ..double checked my ground and all the connections .... its not a new tach ... a friend of mine gave it to me last spring ... FRIK !!

10-25-2004, 01:19 AM	#1
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	tach suggestions Im just curious where to hook my "keyed power" wire (red wire) ... i want something under the dash but easily accessable ... Maybe a terminal on the fuse box ?? lets see if im headed in the right direction green wire ----> neg. terminal on coil .. black wire -----> any ground (suggestions) white wire -----> ? any and all suggestions / help would be sweet ... its an aftermarket tach that was given to me .... thanks !!! __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

10-25-2004, 01:21 AM	#2
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	dash light __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-25-2004, 01:35 AM	#3
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	ok .. help me out alittle ... where exactly should it go ? __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

10-25-2004, 07:26 AM	#4
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	There will be a switched 12v terminal of your fuse box for your power wire. Use as test light and make sure it's powered with the key on, but not when the key is off. __________________ I'm on the Instagram- @Gearhead_Kevin

10-25-2004, 04:50 PM	#5
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	i think i wedged my tach light wire under one of the wedge bulbs sockets, but you could splice it in to the dash harness wire for the lights __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

10-25-2004, 05:33 PM	#6
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	For my white wire i tapped into the wire feeding the light behind the heater controls. Green wire went to the dizzy, red wire went to the IGN UNFUSED terminal in the fusebox. The black wire i put a spade terminal on, and put under the screw holding the steering collumn in where it goes into the dash. Make sure you clean the area real good so you get a good ground. You can really just connect it to any old screw, the whole truck is grounded. Also a good idea to buy a inline fuse holder when tapping into the IGN UNFUSED terminal in the fusebox, being that it is of course unfused and you can burn your truck down if your not careful. __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

10-25-2004, 09:50 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	see the spaid coming out under the word cluster feed? If you put a femail spaid connector on your white wire, and plug it into that, it'll work with the light switch and no splicing required. Ignition unfused in the upper right would be a good place for the red wire. As far as grounds, I like using one of the bolts that hold the plate under the steering column...never had a problem there.

10-26-2004, 01:49 AM	#8
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	You guys ROCK !!! .. thanks a million ... __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

10-26-2004, 12:53 PM	#9
landon4421 Life is Good ! Join Date: Mar 2002 Location: Hollister, Ca. Posts: 1,992	I just spliced my light wire into the back of the dash. That way when I used the dimmer switch, my tach would dim with the rest of the lights in the truck ! __________________ '72 Chevy C10 4x4 shortbed "Project" '71 Chevy C10 2wd longbed "partsrunner" '91 Chevy Burb 4x4 "kidrunner" '14 Honda Accord Sport "commuter"

10-26-2004, 03:10 PM	#10
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	well i hooked it all up .. and no dice ..double checked my ground and all the connections .... its not a new tach ... a friend of mine gave it to me last spring ... FRIK !! __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.



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