Where does the positive on the choke connect?

[82silverado]

Choke is 20 amp.

[Stewart G Griffin]

Ok, i just looked at the fuse panel and it does say 20A for the choke slot.

It does seem rather high, and i would think 5A should be enough, you know just to power the choke coil, but there you have it.

[m3talc0re]

Lol. Learn something new every day, huh?

[m3talc0re]

Does this help sort out the confusion on circuit operation?

I just realized I didn't thank you for the post. Yes it did clear up my confusion. I just came back to this thread because I'm about to go wire it up, lol.

[bd]

You're welcome.  Good luck with it.

[m3talc0re]

I  got it all connected right I think. But it's not working properly. When I start it, the choke light is only on for a second or two. The choke never relaxes.

[bd]

The choke light is operating normally.  It is supposed to extinguish when engine oil pressure builds above 3 - 7 PSI. 

Use a test light grounded directly to battery negative to probe for power at the choke thermostat while the engine is running.  If there is no power, the choke is incorrectly wired.  Recheck your work.

Once you have verified power to the t-stat, shut off the engine and disconnect the choke lead.  Jump B+ directly to the choke t-stat terminal.  The choke plate should gradually open all the way over the ensuing 2 - 3 minutes, max. 

If the choke doesn't open, either the t-stat is faulty or it is not grounded.  Make sure there isn't a gasket installed between the choke t-stat and its housing, insulating the t-stat from ground.  With B+ still connected to the t-stat, probe the t-stat housing to make sure the test light doesn't glow.  If the test light glows even slightly, the choke housing is not properly grounded through the carburetor to the intake manifold.  Replace the t-stat and/or correct the ground connections as testing indicates.

[m3talc0re]

How long should it take to get 3 to 7 psi?

[82silverado]

How long should it take to get 3 to 7 psi?

After it starts, just a second or so.

[m3talc0re]

I checked it with a multimeter earlier and it's getting power. But it doesn't seem to want to open right. I'm wondering if the coil or something is just worn out

[bd]

Did you jump power directly to the choke t-stat and verify there is no gasket between the t-stat cover and its housing?

[m3talc0re]

I verified power and ground on the choke terminals

[bd]

Replace the choke thermostat.