Ignition Upgrade With Relay?

[Roberto]

Hi Guys,

 

It's well documented that S30 headlights are dim due to resistance from the cars fuse box and factory wiring and that using a relay to get power directly from the battery makes a big difference.

 

Could this be done with the power wire going the ignition coil and would this be a way of getting a greater ignition spark?

 

Just a thought......

 

 

Cheers,

[PB260Z]

Hi.

 

In short No.

The coil in an S30 doesn't run on 12V except during engine start up.

 

Cheers

 

PB

[Roberto]

Thanks PB. What about when you remove the ballast resistor, say when you are running a 280ZX dizzy and coil?

[Six_Shooter]

If you're running an ignition system that doesn't use a ballast resistor, then yes, there is a potential for increased spark potential by sourcing a stronger ignition source for the ignition system.

[RLY240]

Roberto the average coil only draws 4-5 amps so shouldn't have any trouble drawing this through the stock harness. A high output coil might draw 6-7 amps but you can always test this with your multi meter (most have a current limit of 10 amps which should suffice).

Check the current (with the engine running) as is and then check it with a power feed straight from the battery. If the direct battery connection draws more current then you might get some gain with a relay (or just a heavier cable) otherwise  you're just adding complexity for no gain.
Roger

[Sirpent]

Try this option

 

http://www.ebay.com.au/itm/Nissan-Datsun-120Y-180B-200B-Sunny-240Z-260Z-Head-Light-Twin-Relay-Harness-Loom-/281065030222?hash=item4170c8024e