Ignition - run position / remote

[architect]

Hello-

I spent a good time browsing the forms.. and can’t find a solution.

I am hooking up a subwoofer under the glove box of my 78 - 124. I need a good remote signal to turn on when the ignition is in the run position (+). Can someone help ID the wire from the ignition harness.

Thank you

[architect]

Possibly the pink wire or light blue / black... with a fuse oh course?

[DRUMMOND]

Your head unit should have a remote turn on wire +

[architect]

Sounds like fuse 9 or 10 is a good source too. 16 amps.

[spider2081]

Sounds like fuse 9 or 10 is a good source too. 16 amps.

I think only one of the fuses 9 or 10 should be 16 amps. which ever one has the horn on it. The other fuse should be 8 amps. Also I believe fuses 9 &10 do not go through the ignition switch they have power as long as the battery is connected in the car. I think switched power is on fuses 1 & 2.

[architect]

Sounds like fuse 9 or 10 is a good source too. 16 amps.

I think only one of the fuses 9 or 10 should be 16 amps. which ever one has the horn on it. The other fuse should be 8 amps. Also I believe fuses 9 &10 do not go through the ignition switch they have power as long as the battery is connected in the car. I think switched power is on fuses 1 & 2.

Oh I see! Got that mixed up.

Side note - would you happen to know which wire runs to the horn (is it yellow with black dots) and is it positive (assume so, but who knows?)

I don’t have a live battery at the moment

[spider2081]

would you happen to know which wire runs to the horn (is it yellow with black dots) and is it positive (assume so, but who knows?)

The wire diagram shows a solid yellow wire supplies power to the horns. This wire comes from the horn relay. The steering wheel horn button supplies a ground to engage the relay. When the relay is engaged power is supplied to the horns. In other words the horn power wire only has power on it when t he horn relay is activated.
You are looking for a wire that has power only in the "start and run" positions of the ignition switch. I thik you correctly mentioned earlier it could be the Pink wire or the blue/black wire coming off the ignition switch. If you have an original Sipea ignition switch there is often a spare "INT" terminal on the switch you could connect a new wire to. The "INT" terminal is a "hot in start and run" terminal.

[architect]

would you happen to know which wire runs to the horn (is it yellow with black dots) and is it positive (assume so, but who knows?)

The wire diagram shows a solid yellow wire supplies power to the horns. This wire comes from the horn relay. The steering wheel horn button supplies a ground to engage the relay. When the relay is engaged power is supplied to the horns. In other words the horn power wire only has power on it when t he horn relay is activated.
You are looking for a wire that has power only in the "start and run" positions of the ignition switch. I thik you correctly mentioned earlier it could be the Pink wire or the blue/black wire coming off the ignition switch. If you have an original Sipea ignition switch there is often a spare "INT" terminal on the switch you could connect a new wire to. The "INT" terminal is a "hot in start and run" terminal.

You anwsered both my questions! Thank you!

I was looking to wire my new horn - after cutting a completely mess out of my engine bay.. and he second question was the run wire.

Thanks a bunch! It’s hard to do without a running battery!