Author Topic: Wiring a sunpro aftermarket tach  (Read 9102 times)

Offline Zeked

  • Newbie
  • Posts: 71
Wiring a sunpro aftermarket tach
« on: April 27, 2013, 10:18:08 PM »
I have a sunpro 1000 tach that I have surgically inserted into the dash panel.

Now I have a cool looking dash with 4 wires dangling down.

White. To lamps

Black to ground

Red to Switched Power

Green ???????????

I have a 87 short step with the 350 and TBI. Bone stock


Should the green go to the distributor, or to the neg coil?
If the dist, where on that muther should it attach?
A six pac for anyone withh pics.........


Zeke
Often Wrong......Never in Doubt!

Offline Shawn0331

  • Newbie
  • Posts: 96
  • Newbie
    • My Blog
Wiring a sunpro aftermarket tach
« Reply #1 on: April 27, 2013, 10:21:30 PM »
On my 86, there is a spot on the HEI distributor that is labeled "Tach." Plug the wire into that and you're good to go.
1987 Chevy V10 Silverado SWB 5.7 on 33x12.5's
http://www.shawnseeley.com

Online bd

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 5636
Re: Wiring a sunpro aftermarket tach
« Reply #2 on: April 27, 2013, 10:31:52 PM »
The green wire connects to the "White" distributor pulse wire off the coil (see image).   ;)
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)

Offline blazing816

  • Frequent Member
  • **
  • Posts: 391
  • A Truck Is Built, Not Bought
Re: Wiring a sunpro aftermarket tach
« Reply #3 on: April 29, 2013, 08:22:20 AM »
On my 86, there is a spot on the HEI distributor that is labeled "Tach." Plug the wire into that and you're good to go.

X2....that's where I put mine.
-----------------------------
1988 Chevy R20 Scottsdale Crew Cab (350/TH400/4.56)

Online bd

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 5636
Re: Wiring a sunpro aftermarket tach
« Reply #4 on: April 29, 2013, 11:06:35 AM »
On my 86, there is a spot on the HEI distributor that is labeled "Tach." Plug the wire into that and you're good to go.

X2....that's where I put mine.

87 TBI used a divorced coil that bolted to the manifold.  On 86 & prior the coil was married to the cap.
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)

Offline Zeked

  • Newbie
  • Posts: 71
Re: Wiring a sunpro aftermarket tach
« Reply #5 on: April 29, 2013, 08:31:36 PM »
So I use the taped off tach wire, right?   Does anyone know what the connector number is? 

Thanks

ZekeD
Often Wrong......Never in Doubt!

Online bd

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 5636
Re: Wiring a sunpro aftermarket tach
« Reply #6 on: April 29, 2013, 08:52:27 PM »
So I use the taped off tach wire, right?   Does anyone know what the connector number is? 

Thanks

ZekeD

Use the taped off tach wire.  Locate a mating OE-type connector at your local parts house.
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)