[supernovanator]

I am going to buy a cheapy $30 Sunpro tach either by Friday or next week. I have no idea how to make it work, since I don't plan on buying an HEI distributor for a while. Can someone help? I don't have MSD or anything like that, just plain old points ignition.

 

[JR]

I think they all work with points but not sure.
JR

 

[supernovanator]

I think they all work with points but not sure.
JR

Well I am basically lost on where to wire the tach in. I know there is a little clip-in for the coil on HEI setups but points?

 

[novaboy009]

Isn't there a similar plug on the points ignitions?

Green - coil
White - tapped into an instrument light (I use the "light" terminal in my fuse box)
Red - Switched 12V source
Black - Ground (steering column works)

Kev

 

[WildBillyT]

Damn. I just dropped my engine out. I've got the $30 Sun tach and a points ignition. I think it was just wired to one of the coil leads.

 

[jarhead64]

Just looked at the Sunpro web site - novaboy has the wiring correct. The green wire goes to the negative (-) side of the coil.

http://www.sunpro.com/user_manuals.php

 

[supernovanator]

Just looked at the Sunpro web site - novaboy has the wiring correct. The green wire goes to the negative (-) side of the coil.

http://www.sunpro.com/user_manuals.php

Huh... I did not find that on the site a couple months ago.:no: Thanks.

 

[jjyoung909]

Isn't there a similar plug on the points ignitions?

Green - coil
White - tapped into an instrument light (I use the "light" terminal in my fuse box)
Red - Switched 12V source
Black - Ground (steering column works)

Kev

Standard tach hook up.
White to 12V Dash Lights.
Red to 12V switched source on fuse block.
Black to Good engine ground.
Green to neg side of ignition coil.

The link below should handle the visual representation of the hook up.
http://www.offroaders.com/tech/images/autogage2.jpg

James Y.

 

[tbills66]

I used to run a sunpro tach with points and the green wire goes to the neg side of the coil. If you have not already purchased the tach, don't. Save up and spend the extra money on a good one like an autometer. You wouldn't believe how far off they are on the rpms. Mine was off by about 800rpms. At 6400 on the sunpro it was actually 7200.

 

[Custom Jim]

The trigger wire off of the tach will go to the negative side of the coil. Crimp on a ring terminal on the wire end and put it under the threaded post on the coil.
Also make sure when you are routing the wire to the coil that it cannot become easily shorted out. If it does it will kill the engine.

Jim