Wring a NOS bigshot kit

[Doc Holiday]

I have a NOS big shot kit. I currently have the solinoids wired using 14 gauge wiring feeding off a large distribution block. The single 14 gauge feeds a remote wire to a relay for the nitrous fuel pump, and also feeds both solinoids. The wire is roughly 10 feet in length from power source - though switches - to solinoids. I'm starting to think his isnt enough to get the job done, and maybe I should relay the solinoids and use the 14 as just a remote wire to the relays, then run bigger wires (maybe off the starter or something close) to the solinoids themselves. Any advice?

[Sparky]

When it comes to Nitrous systems there are all kinds of ideas, opinions and theories on the Electrical side of a Nitrous system for what has worked for other people, especially when it comes to a Fogger.

With the different types of Fogger systems that are available on the market, most of them have different requirements pertaining to Relay and Wire sizes. Some of these systems require 70 amp Relays and some will operate off of a typical 30 amp Relay.

In my experience of what I have seen and in my opinion, I feel the grounding methods that are utilized is the biggest insult to injury to these systems. Neglecting the ground side can cause the need of big amp Relays and even continuous duty Solenoids to support a system. Keeping in mind that ground is just as important as the power supply side, if you deviate from this with smaller wire size on the ground side or an inadequate ground, you will only be straining the other side of the system (the Power side). This is also very inefficient and creates a big strain on the electrical system.
With that being said, try to keep everything equal. It seems to be common practice to supply a Solenoid Battery power through a Relay, why not give the Solenoid adequate ground to the Battery?

Use a quality Relay that is readily available and buy a couple so you have a spare.
I would pull power for your Relays from a central power point near the front of the car (under dash area), this central power point should be supplied with Battery power from the Battery or On/Off Switch and it should be supported with Battery cable, this creates a point in the front of the car in which you can pull all your power from for accessories. Locate the relays so that they are somewhat near the central power point (usually within a couple feet), that way the wires running form the power point to the Relay aren’t tremendously long and causes voltage drops. Use a good quality wire and follow the manufacture recommendations and/or wire sizes adequate for the amperage draw the system will pull. If your system pulls between 30 and 40 amps then support it with 14 or 12 gauge wire.

I hope this helps,
Sparky