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Wiring Help..... Vhf/scanner/lights.......

NS Sierra Guy

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NS Sierra Guy Enthusiast

NS Sierra Guy

Posted
Posted

I have been looking through the forums the last few weeks since I purchased my 09 GMC Sierra Crew 4x4 for some assistance/help on some wiring questions. I am looking to install a VHF radio, scanner, and LED Emergency Lights (front and rear warning lights) and I am unsure what the best way to install these components are. The VHF consumes 14A on transmit (1.2A on scan which will be 99% of the time), scanner at 1.2A, front LEDs (<10A total), and rear LEDs (<10A total). Some people are suggesting running the radio/scanner from the fuse panel inside and wire the other lights to the battery with a relay to activate. I have also looked at putting in a switch box direct (5 circuits at 20A max each, 65A total) from battery and wire everything into that. I went to my dealership for some help and what I can do to not void the warranty however lets just say that after 20 mins they couldn't provide me any assistance, which is why I am turning to the forum. Your thoughts? My automotive wiring knowledge is limited so the easier the better. I would take it to my Fire/Safety supplier for install however they like to cut into harnesses to get power and I want to avoid that :rollin: . Thanks in Advance.

cvandegna Enthusiast

cvandegna

Posted
Posted

To do it right and give you room in the future I would pull a line directly from the battery to the center console. Then tap off it all you like, including running a branch through a relay hooked to your acc circuit as you mentioned.

 

I currently have a CB, linear amplifier, Nova 6 head strobe unit, 600W amp for my subs, offroad lights and other goodies running off this type of setup. Just use at least a 4 ga wire so you can pull whatever you want off of it.

gribberz Enthusiast

gribberz

Posted
Posted

I have a 07 Silverado and am running the following equipment:

 

- A larger array of LED lighting

- 45 Watt VHF Mobile

- 45 Watt UHF Mobile

- 500 watt amp

- Siren and Light Controller

 

For the radios I would highly recommend running the ground and power directly to the battery to avoid any unwanted interference.

 

As for the rest of the stuff I used the hot lug in the fuse box under the hood and installed a solenoid switch which is ignition switched. The 4 ga wire runs from the 2nd battery tray, where the solenoid is mounted, through the rubber grommet in the firewall directly under the frame mount in the front portion of the engine compartment near the firewall. You might need to remove the support to get the wire through. The 4 ga wire runs to a fuse panel in my console.

 

The amp is run directly from the soleniod.

 

Hope this helps... If you need more asistance, message me, I am a public safety equipment installer.

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