| |
Click on image for the lowdown. 
====
| | |
7 members (msmall, Otto Skorzeny, Phak1, 55shaker, TUTS 59, Wayne67vert, 1 invisible),
106
guests, and
2
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,095 Posts1,056,069 Members48,433 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2008 Posts: 20 New Guy | | New Guy Joined: Oct 2008 Posts: 20 | Hi I have recently aquired an old tach that I want to install on my 57 chevy 6100. When I got the truck It had a big hole between the light knob and the choke knob. It looks factory because of how precise it is cut. See the tach fits in the hole and thats where i would like it. Now heres the promble i don't know how to wire it. Win I tried to wire I got shocked  . But I have kind of figued it out. Theres to nuts marked one says B+ witch I assume means postive on batter. The second has an S+ witch means starter right? But I dont know what the other two are for. Please help don't want to get shocked again. Thank for any info | | | | | Joined: Aug 2006 Posts: 30 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2006 Posts: 30 | I would connect the B+ to the ignition switch, so it's powered with key switch on. There is no value in feeding it with live battery power
I would connect the S to the points wire post on the Ignition coil. To me S means signal. Signal is provided by the points "pulse". 4, 6, and 8 cylinder are different, certain resistors are used to make the tach read correctly.
The case should be grounded.
There may be a connection for a light.
"Nothing is ever as simple as just turning wrenches!"
| | | | | Joined: Oct 2008 Posts: 20 New Guy | | New Guy Joined: Oct 2008 Posts: 20 | OK I guess I should of also of said that it doesnt have no points. It's electric egnition. Sorry for not including it. I think the gauge is from the 60s I think.
Last edited by Puryear; 06/08/2010 2:08 AM.
| | | | | Joined: Apr 2009 Posts: 164 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 164 | disconnect the battery when you are wiring. | | | | | Joined: Sep 2006 Posts: 1,997 Big Bolt Forum Co-moderator | | Big Bolt Forum Co-moderator Joined: Sep 2006 Posts: 1,997 | I think there may be a converter that will take the electronic ignition and give the correct signal to your tach. I think I just saw it on My Classic Car last week on their Eastwood Garage or Egge, what ever they call it.
A day without laughter is a day wasted- Charlie Chaplin
When wrestling a grizzly bear, you have to keep at it until the bear gets tired, not when you get tired. 1948 Chevy 2-Ton | | |
|
|
| |
