help with desmogging

[mikea]

i am ready to remove the smog wire harness- (1974 2002 carb )

i understand that there is a wire that goes to the pos. terminal of the coil involved, that has to stay.

can any one fill in some details ?

mike

[esty]

run a wire from fuse 12 to coil & remove the stuff

[Mike Self]

the wiring harness for all the relays and vacuum switches located on the firewall is separate from the car's main wiring harness, and can be unplugged at a single point and removed, along with the relays and switches. Makes for a neat job.

Euro cars didn't have all that junk, so it makes sense that the factory would have made the USA only pieces to plug into the existing main harness, which then could be used for both Euro and US cars.

cheers

mike

[mikea]

OK Thanks

but if i run a wire from # 12 fuse to the + coil, won't the coil be always on?

shouldn't it come from the key switch?

mike

[eurotrash]

I literally just put this on my blog page last night..

Copied:

This was too easy.. Just find the big blue harness on the back of the engine compartment, start at the positive side of the coil and work backwards to the bottom of the fuse box. Then plug a new 16 gage wire into the now open slot on the 12th fuse and string it over to the positive side of the coil.

Before:

During:

After:

[mikea]

that all makes good sense except: shouldn't the ignigtion ( pos. coil wire)

be switched ?

isn't cutting power to the + coil what shuts off the engine?

[eurotrash]

No idea. I just followed like a good sheep should.. figuring the others who came before me know.

I just know that it started on the first crank after.. thats all I wanted to hear!

[Napes]

#12 fuse is switched.

Bob Napier

[mrgesq]

This is on my to do list also. Dumb question, is there an easy way to access the #12 fuse from the back/bottom? Do you have to remove the front wheel and access it go through the fenderwell?

Mike

76 Malaga (Molly)

[Scott Sislane]

remove 1 screw from the top of the fuse block, and it lifts up & out so you can access the back/bottom of it.

there's a hole inside the engine bay that allows wires to run to the bottom of the fuse block. So you can easily run new wire to it.

[BeMyWay]

I'm getting ready to remove my air pump this weekend.  The rest ot the emissions to follow.

[gen2b5]

Hey guys,

Just wanted to throw out a big thank you for the how-to.

The guidance and insight was super helpful and saved me hours.

Thanks for sharing the know-how!

[fwardell]

Hey, save all of your smog stuff. Folks in CA need it to pass inspection. Sold my '76 CA smog stuff for $400. 

[CF2002]

What is the fate of the various vacuum lines when removing those three smog switches - just plug them?

[Healey3000]

Your smog harness may have the resistor wire for the coil.  Mine did.  Fortunately, I have a high-impedance coil and did not need the resistor wire.

 

If you need the resistor wire in series with the coil, then make sure you harvest it from the harness and connect appropriately (refer to the wiring diagram).

Edited April 5, 2017 by Healey3000