Tach signal wire to Neg on coil?? - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
 
Thread Tools
post #1 of 6 Old 02-18-2006, 12:10 PM Thread Starter
Mopar Guy
2wd Dak, 4X4 soon
 
Join Date: May 2005
Location: BC
Posts: 339
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Tach signal wire to Neg on coil??

Anyone know were I need to hook up my signal wire fo my tach?

91 4X4 Dakota on 31" mudders
87 2 wd Dakota, 3.9, auto (soon to get 360/727)

(\__/)
(='.'=)
(")_(")
Mopar Guy is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 02-19-2006, 10:58 PM Thread Starter
Mopar Guy
2wd Dak, 4X4 soon
 
Join Date: May 2005
Location: BC
Posts: 339
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Nobody knows?

91 4X4 Dakota on 31" mudders
87 2 wd Dakota, 3.9, auto (soon to get 360/727)

(\__/)
(='.'=)
(")_(")
Mopar Guy is offline  
post #3 of 6 Old 02-21-2006, 01:47 AM
Chump
Senior Member
 
Chump's Avatar
 
Join Date: Feb 2005
Posts: 2,140
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
87 or 91? Is this a new tach and what brand? Have you tried their website or Tech Support phone line?
Chump is offline  
post #4 of 6 Old 02-21-2006, 10:23 AM Thread Starter
Mopar Guy
2wd Dak, 4X4 soon
 
Join Date: May 2005
Location: BC
Posts: 339
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
91 Dak V6 TBI

The tach is used (unknown brand) but worked fine on my 76 Buick with HEI before I took it out of the car.

I just can't find out where to hook it up. Someone said the neg on the coil? Sound right.

91 4X4 Dakota on 31" mudders
87 2 wd Dakota, 3.9, auto (soon to get 360/727)

(\__/)
(='.'=)
(")_(")
Mopar Guy is offline  
post #5 of 6 Old 02-21-2006, 01:16 PM
BDL
Registered User
 
BDL's Avatar
 
Join Date: Feb 2005
Location: Bettendorf
Posts: 209
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Yes. That's correct. The positive on the coil should come from a switched positive voltage off the ignition (or from the computer) and the negative comes from the distributor (or from the computer). Basically, your tach is measuring how many times a spark is thrown in a matter of a minute. The output will change depending upon whether the tach thinks it's connected to a V8 or a V6 or a 4cyl. engine.

So, as long as your 76 Buick had a V6, then everything will work correctly. However, if your Buick had a V8, then you will need to find a brand name and find instructions on the Web. There will be an additional change in wiring with the unit if the number of cylinders changes. Usually, it's a matter of cutting the "green" wire if it's one thing or leaving it connected if it's another. The color may change and the specifics may differ slightly. However, I can't think of an instance where an easy wiring change would not be required.

1950 Dodge Panel Van (2002 5.9L Magnum V8)
1st 1950 Panel Thread
2nd 1950 Panel Thread
1966 Dodge Charger (318 C.I. Poly-head V8)
1977 MGB (2005 3.5L V6, NSG370 6-speed manual trans, BMW E36 IRS and front spindles, Mustang II IFS, etc.)
2000 Dodge Ram (5.9L Magnum V8)
2006 Jeep Commander (4.7L Magnum V8 - Wife's)
Among other past vehicles, this one stands out...
My Bronco-Esque '89 Dakota
BDL is offline  
post #6 of 6 Old 02-22-2006, 01:52 AM Thread Starter
Mopar Guy
2wd Dak, 4X4 soon
 
Join Date: May 2005
Location: BC
Posts: 339
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Hey, thanks a lot for the tips. The tach has a switch on it so I just switched it to V6 from V8. It work fine now, I just need to get it mounted properly but thats easy. It's a 2" tach so it will fit fine on the column. I can't believe they made a manual truck without a tach!

Anyway BDL, your truck is really cool. Way to go!

91 4X4 Dakota on 31" mudders
87 2 wd Dakota, 3.9, auto (soon to get 360/727)

(\__/)
(='.'=)
(")_(")
Mopar Guy is offline  
Closed Thread

Quick Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tach signal wire?? Mopar Guy Dodge Dakota 1st Gen (87 -96) Forum 0 02-11-2006 07:23 PM
Anyone know the tach signal wire on a 2004 Ram Hemi ? RigorMortis 3G Dodge Ram Performance Talk 4 01-27-2005 12:12 PM
Tach signal wire for RS or tach ddn 1G Dodge Durango General Talk 4 11-15-2004 12:27 PM
tach signal wire? four 2G Dodge Stratus - General Talk 1 11-11-2004 11:08 AM

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

 
For the best viewing experience please update your browser to Google Chrome