so im been trying to figure out wiring guage size. im going to run a set of hid reverse light and would like to know what gauge of wire i should use for my constant 12v. it will run from the front of the car to the trunk where the reverse lights are at. from what i read, hid kit takes 30amp to start up.

 

get 14-16gauge

 

I'd go with at least 14awg. See chart in this link:

http://www.powerstream.com/Wire_Size.htm

 

30 amps WTF.

the usual is 6 amps start-up and 4 running.

14 is fine 16 is good. i would do 14 tho. read the ballast. it should tell you starting amps and running amps i believe.

 

x2 ballasts = 6x2 = 12 amps... but it all depends on the manufacturer of the HID kit. Some are more efficient than others.

I would do a 10 awg. and then do the wires to the ballasts (after the relay) in 14 awg. (Safety First)...

 

thanks for all the reply guys

rodney has it right. the ballast does take 6 amp each and maybe a little more. would it be safe to do it in 12 gauge wire? i have a spool of those at home. also rodney i believe you have hid rear also right?

 

Yes Sir... But I have 0 awg going to the relay...

 

14 should be fine.

Rodney cheated. he used his amp wire and connected his relays to it

 

I so want to do this mod but thinking of having to run a wire from the battery all the way back is keeping me from doing it. do you have to take a lot of the interior parts off to acomplish this? Anyone in houston willing to help

 

no you dont have to take alot of interior parts off. do it!

 

nope not really but it is a pita. i did it when i was doing a upgrade for my entertainment system so it was all good
rear seat, rear side panel, trunk liner, trunk cover liner front door sill, lower kick panel ondriver side.

 

Thanks guys. Will have to give it a go one of these days. For now i will stick with the LEDs.

 

this is a really old thread but did any of you guys put a switch in also? how did you wire the switch?