Re: Size of wire??
 

And depending on your computer(if using one in your car), if everything is chassis grounded, you will have nasty litle transient spikes all over the place..

Chassis ground what isn't sensitive and set up a separate ground with out chassi interference.

If you arent using a computer in the car, just chassis ground everything with good heavy ground wire.

David
The New Hemi Guy.

Re: Size of wire??
 

wow thanks for all the great input now i think i need to rethink some of my wiring...... thanks to all bryan

Re: Size of wire??
 

Bryan,

Just to be clear on the relay's. You still need a large wire on the main power into the relay and out to the pump. I use 10 or 12 ga. depending on length of run, on the cars I wire. You can then use 14 16 ga on the switch wires. I use relays on the fuel pump, water pump, and electric fan. I also put fuses on everything. Some like circuit breakers, I like simple with fuses.

Also, as several have said, make sure you ground everything. I probably over kill this, but I use ground straps on the heads to block on alum head combo's, block to frame/cage. I chased a grounding issue on a car years ago, and swore to never miss that step again!

Good luck.

Ken

Re: Size of wire??
 

as far as grounding straps go USE THE BRAIDED STUFF- do not use solid core

Re: Size of wire??
 

Define juice? A wire twice as big in diameter will have 1/2 as much resistance or twice the conductance. See OHMS LAW.

http://en.wikipedia.org/wiki/Ohm's_l...of_Ohm.27s_law

Basically voltage = current times resistance or current = voltage divided by resistance. Resistance is measured in ohms.

Re: Size of wire??
 

OHMS law???

That has been our problem, we have been using "Murphy's law" all this time!

David
The New Hemi Guy