Best source for underdash hot lead ?
- Thread starter mbaird
- Start date
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From the ignition switch are a blue wire and a brown wire. One hot in start, the other hot in run.
You'll need to tie these 2 wires together whether inside at the switch area or outside where they attached to OEM ballast resistor.
You'll need to tie these 2 wires together whether inside at the switch area or outside where they attached to OEM ballast resistor.
TrailBeast
AKA Mopars4us on Youtube
Probably a lot simpler to tie them together under the hood and run the wire to power the ignition back inside.
yeah... I was just thinking that.
TrailBeast
AKA Mopars4us on Youtube
Just unplug and remove the ballast resistor (it's getting bypassed anyway)
Use a test light on the unhooked ballast wires (harness side) and find the one that has power with the key in the on position.
Then the one with the key in the crank position.
Also note that your voltage regulator (blue wire) will probably also need to be connected to those other two wires.
In this case you will have 3 wires connected together and then one off those to your ignition box.
See if your fuse box has a terminal you can tap onto, a few are only hot with the key on. Also if they are all used you can get one of the terminals to add a terminal to it and hook up there.
Yes but it needs to be hot while cranking.
I am assuming this wire run to an interal relay.
I have the main power leads running directly to the battery..
I got ya. There are a few that are always hot with the key on and also while cranking. Look at a wiring diagram or just get a test light and crank to see which one gets hot.
That how I added a few things on my 74.
On a bracket car I ran a hot lead from the starter solenoid on the drivers inner fender into the car, connected it to a suitable switch for the load, and connected the ignition hot lead to the other side of the switch. Crank the engine and then flip the switch.
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