rx7 punk

Yea I did a V8 swap and I tapped into my ON and my START keyed hot wires in the steering colum but their .6 volts is to ussy for my starter and ignition how could I up the power without doing damage. Im going to take the easy way out and rig up a push button from a 12v to the starter. What About the ignition? could I up the juice going to the ignition switch without overloading my acc. and frying the switch?

Thanks

88 SE

Use the ignition to power a relay. Use the relay to provide the 12 volts.

rx7 punk

but where could I find a relay to bump from .6 to 12 votls? lol is that safe to do?

Icemark

What did you tap???

Anyway, if you are only seeing .6 volts on a wire that is normally 12+ volts, then your "tap" sucks. In other words, your connection is poor, or you have other issues with wiring, which makes this a thread that then should be in the other engine conversions section.

Icemark

A relay doesn't bump up voltage. it is simply a electrical switch driven by another electrical switch or device.

88 SE

Yeah.. you use the relay to provide the power.

Heres how it works, im sure someone can rig up a diagram on how exactly to hook it up but anyway:

You use the stock ignition signal to power the relay. When the relay gets that signal, it connects the 12v in to the 12v out, therefore providing the 12v you need without placing the load on the delicate ignition system.

Think of a relay as a heavy duty switch. You can trigger it with a ground or a positive voltage event.

When you trigger it, it connects whatever you have hooked to its terminals.

In this case we want 12v in and 12v out with the "trigger" bieng the ignition.

The ignition "on" triggers the relay, and the 12v safely passes through it without risking overloading the .6v ignition switch. Viola, you know have an ignition switched 12v power source

introVert

I need these for my power window switches- they are w a y t o o s l o w

Kenteth

this has been covered hundreds of times. IIRC its the brown wire off the leading ignition pack. Use it as the switch, you can mount the relay next to the battery and the fuseblock right there too. Then just run the wire in. Done.

rx7 punk

its not my connections, I get .6 volts with my multi meter at the soldered points on the key switch, thats before I tapped into them, I assumed .6 was what the stock 7 ran at seeing as when on the start position the switch put out .6 then when the key was on the ON position the wire to the starter solenoid read 0 and then the ON wire to the ignition system read .6. Am I correct to assume .6 was the stock output for both ignition and starter solenoid activation?

HAILERS

The stock RX-7 ignition switch sees either battery voltage of approx 12vdc or alternator voltage if the alternator is operating, which can be up to 14 plus volts. Something is wired irregular as far as your ignition switch goes.

On a NORMAL RX the feed wire for the ignition switch is a pure black wire in a two socket connector that mates with one of the ignition switch plugs. The other wire in that two socket plug is colored black/white (that is from memory, I'm not looking it up in the fsm).

That single black wire has a connector at its other end in the engine bay. That single blade connector is located about six inches to a foot below the engnine fuse box. That same wire splices off to the alternators large black wire.

rx7 punk

well as long as Im getting a constant .6 volts Ill just hook up two relays inline, What kind or what specific type of relays am I looking for? The guys at radio shack and the guy at auto zone were of no help and told me to give up lol What should I ask for when I attempt to resisit autozone?

Aaron Cake

iTrader: (1)

You can't do anything with 0.6V. Find your wiring problem. You should be seeing 12V at the ignition switch. If you aren't, run a properly fused wire directly from the battery.

rx7 punk

ok so the 2 volts into the switch is bad then, good ill run a fused line to the ignition switch tonight. Aaron, any idea what kind of out put ill be looking at with a good 12v input?

Icemark

12 volts out, if there is 12 volts in.

the factory switch contacts are around 60 amp (at 12 volts) contacts, more than enough to run almost anything.

Fix your power. I told you that when I posted first.

Aaron Cake

iTrader: (1)

Sounds like you should pick up a book on basic electronics and/or automotive wiring. There are quite a number of things you don't seem to understand.

Icemark

I agree, he is in over his abilities.

rx7 punk

-well I assumed that because I had 2 volts going in, that the power must be being kicked down by the switch to the .6 volts

-lol Aaron I have no idea what im doing lol thats why I converted my car to a carb, this is by far the hardest part of the entire build up

-Ice, I misunderstood you, im just so confused by all of it lol, I soldered to the input post on the switch so I knew I had a good conection, my bad

Finally ill clip the rx7 stock input and wire a fused 12v to the switch assuming once again that it won't mess up the accessories right?

rx7 punk

lol thanks for the support guys, im a med student not an electrician.

You guys were a huge help thanks a ton