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So I tried asking on the Bronco forum and didn't really get much.
This is on my 86 Bronco, but should be the same with an f150 etc.. of the same vintage I believe.
351w Carbed
Next to my distributor there is a wire loom that open up. There is about 7 wires.
1 goes to the temp sender, 2 goes to the coil. The rest go to the distributor plug.
Except there is 1 red wire and I cannot figure out where it goes. Pic will be attached.
I am going to do an intake manifold swap, and I would love to figure out what it goes to.
It is hot when the key is turned, so right now I just have some electrical tape covering the end.
(prob a different topic, but) I would also love to install my GM HEI distributor while I am doing the intake swap, but I am not sure what wire to use for the battery part of the distributor.
Twist it around and look at it carefully. The wire colors like to fade so sometimes it's hard to see, but see if it has a faint yellow stripe on the red wire. I believe it's the "carb circuit" wire and most likely went to a throttle kicker solenoid, and or the evap bowl vent on the carb.
In checking the wire color, it is very hard to tell, but yes I do believe that it is red/yellow.
Why they used yellow with red seems dumb as it is very hard to tell.
So, if that is what it is, whats it for? I know you said throttle kicker, but what is that and what does it do? I don't even see one.
Originally the Bronco had the smogged Holley carb on it. I have switched to an Edelbrock 1406. I don't want to cut anything out in case I want to sell and original equip needs to go back on for smog purposes.
In checking the wire color, it is very hard to tell, but yes I do believe that it is red/yellow.
Why they used yellow with red seems dumb as it is very hard to tell.
So, if that is what it is, whats it for? I know you said throttle kicker, but what is that and what does it do? I don't even see one.
Originally the Bronco had the smogged Holley carb on it. I have switched to an Edelbrock 1406. I don't want to cut anything out in case I want to sell and original equip needs to go back on for smog purposes.
Thanks all
It's all in the diagram above. It could have any combination of bowl vent solenoids which vent the bowl on the carb, the throttle solenoid which is basically a anti-dieseling solenoid, or the throttle kicker solenoid which reduced emissions during deceleration. If it had it, this is all fed with the red/yellow wire.
You need to have colors to help determine what circuit the wire is for. You can quickly run out of colors if you only use one on a wire. The main problem is these trucks are getting old, and the coloring on the wire is fading. I challenge you to find a white wire under the hood. Unless it was covered by tape, most of the white wires now look yellow.
Since there is a good chance that I will not be using that wire, can I use that as my distributor battery wire?
It is only hot in the run and start position
Since there is a good chance that I will not be using that wire, can I use that as my distributor battery wire?
It is only hot in the run and start position
Yes you could. But if fuse 18 blows it will quit on you. You will notice in the diagram with the ignition switch, there is no fuse, just fusible links. In the old days the priority was to keep things going as much as possible. Unlike today's vehicles that will stop running if some sort of emissions device fails, which leaves you stranded somewhere.
If your dist. is a DSII with a vacuum advance can and hose then there is no reason to swap it out as you dont gain anything.
If anything you lose some. Because of how big the HEI dist. is you cant turn it to adjust the timing a lot of times to where you want it.
Leave the HEI to GM motors and the 300 straight six when swapping out the feed back system.
Dave ----
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