CJ7 Tach wiring - Pirate4x4.Com : 4x4 and Off-Road Forum
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > Brand Specific Tech > Jeep - Non Hardcore

Share Thread Tools Display Modes
Old 01-26-2008, 10:05 PM   #1 (permalink)
Registered User
Join Date: Jun 2006
Member # 73889
Posts: 2
CJ7 Tach wiring

I have an 83 CJ7 with the stock 258 I6 running a Howell TBI and the GM HEI distributor both of which eliminated tons of unnecessary wiring. My stock tach still operates but acts strangely. It seems close at idle but wont go above 3000 RPM. When I hit the throttle hard it dips momentarily. Now I'm aware of how most tachs are wired but this tach is different than any I've seen. It has two large red wires in the back, either of which, when cut, causes a loss of signal to the Howell system as evidenced by a loss of the check engine light and it will not run when the key is released after startup. I thought one would be a ground that I could simply hook to the tach lead on the HEI distributor but have found that this is not the case. I know most will say just add a separate tach but I am maintaining the original look and spirit of my ride while making all my upgrades in perfomance and running gear. If anyone else has dealt with this or has a wiring schematic and can help me figure how I might make this work I'd be mighty grateful. Thanks in advance.
gmanrn is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the Pirate4x4.Com : 4x4 and Off-Road Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.


Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -7. The time now is 11:22 AM.

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.