1
Welcome,
Guest
. Please
login
or
register
.
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
News:
TODAY
is a Great Day to visit our
Store
and order the parts you need for your truck!
Home
Forum
Store
Help
Search
Gallery
Login
Register
73-87chevytrucks.com
»
73-87 Chevy _ GMC Trucks
»
Interior & Equipment
»
Instrumentation
»
Wiring a Tach on a TH400
« previous
next »
Print
Pages: [
1
]
Go Down
Author
Topic: Wiring a Tach on a TH400 (Read 2206 times)
RGSMS
Newbie
Posts: 5
Newbie
Wiring a Tach on a TH400
«
on:
February 17, 2018, 01:33:00 PM »
Just got a new gauge cluster and it has a tach on. It (my old one never had one). I was wondering how to wire it from trans to gauge.
Sent from my iPhone using Tapatalk
Logged
Rapid Roy
Junior Member
Posts: 635
Euless, Texas
Re: Wiring a Tach on a TH400
«
Reply #1 on:
February 17, 2018, 01:56:33 PM »
Welcome to the site
Logged
1974 Cheyenne 10 LWB STOCK 350 W HEI /TH350/AC/4 BBL Quadrajet
Mopar by Birth
Chevy by Choice
bd
Global Moderator
Senior Member
Posts: 6459
Re: Wiring a Tach on a TH400
«
Reply #2 on:
February 17, 2018, 02:06:05 PM »
A tachometer (tach) registers engine RPM so has no connection to the transmission. Pink to 12-volt ignition, black to ground, brown to the negative terminal of the coil (the TACH terminal of the distributor if HEI).
Logged
Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)
RGSMS
Newbie
Posts: 5
Newbie
Re: Wiring a Tach on a TH400
«
Reply #3 on:
February 17, 2018, 09:08:24 PM »
Ok awesome thanks guys
Sent from my iPhone using Tapatalk
Logged
75gmck25
Frequent Member
Posts: 439
1975 GMC K25 Camper Special, 350/TH350/NP203
Re: Wiring a Tach on a TH400
«
Reply #4 on:
February 18, 2018, 07:38:38 PM »
Most auto parts stores sell the correct terminal that plugs directly into the tach connections on an HEI. You need a connector similar to this one.
https://www.amazon.com/American-Autowire-500205-Distributor-Tachometer/dp/B003VXLOSU
You can make a female spade terminal work if you have to, but it is only kept in by the friction of the metal tab.
Bruce
Logged
Print
Pages: [
1
]
Go Up
« previous
next »
73-87chevytrucks.com
»
73-87 Chevy _ GMC Trucks
»
Interior & Equipment
»
Instrumentation
»
Wiring a Tach on a TH400