Hey trying to figure out what wires to connect to what wires to make my rear lights work when I'm towing. I've got a 4 flat trailer wiring harness and I've got a converter for separate lighting to combined lighting. My issue I think I'm having is that it's a switched ground system and most of the vehicles I'll pull it with will be switched power systems and I don't want to be continually blowing fuses. My friend says I'm crazy and it won't matter since it's 12v dc and not an ac circuit. But is rather ask than not ask and have issues. If someone could chime in with the colors I'm looking for to connect my wiring to. I'd appreciate it.

 

So I need some help guys. I've got the white with black stripe that goes to all my lights. I believe that's the positive side on my truck. Do I wire my positive(colored) wires to that side. Or do I wire them to the red/white(reverse) green/yellow(rh turn) green/red(brake) and solid green(running light)? And should I connect my ground wire on the trailer harness to the frame? or to another wire? or?

 

Seems like it would be much easier to use something like these
http://www.etrailer.com/Trailer-Ligh...cs/TL21RK.html
http://www.harborfreight.com/12-volt...9925-9374.html

 

X2 on using a set of magnetic lights

is this a 4x4?
Make sure you pull the rear d/s. The rear output bearings don't get lubed properly
plus you run the risk of destroying your t/c and transmission like it did because i was too lazy to pull my rear d/s after a day of wet wheeling when using a tow dolley. truck slipped into gear and it was only about $1000 mistake..

 

It's a two wheel drive I'll be pulling behind commercial vehicles for a business. I've read what marlin has posted several times but everyone I've talked to locally including the guy with a toyota pickup that I purchased my towbar from has said with my 5 speed manual in neutral I shouldn't have any issues. I mean in neutral my driveshaft shouldn't be turning should it? If not I don't see an issue.

As for the magnetic lights. I've seen them pop off and or get stolen and this is for business. I'd like it to be a clean install. Plus I don't have a harbor freight nearby and the cheapest magnetic lights I've seen that look decent start at 40. And when I'm running low on startup money and already have these other components I would rather go the "right" way the first time around.

 

Think about this!!

If your rear wheels are on the ground how can the drive shaft not turn??

also turning the tail shaft of the transmission

Unless you make manual hubs for the rear axle which can be done but so very expensive .

I would make my own light bar to go on the back of the truck when returning home just unplug roll up the cord this way if you need to use another vehicle your not wasting time wiring it up..

This can be wired to what ever trucks your delivering done.

 

ok, might consider adding your vehicle info to your signature.
i have been using the magnetic lights for 25 years..never had a set fall off..

 

Maybe its just me but I would rather spend $40 on a set of magnetic lights then avoid spending the time and money to figure out the 'right' way that could possibly cause electrical issues that would cost much more than the mag lights.
I also know tow truck drivers that have used magnetic lights for many years and not had any issues with them.
And both sets I linked to are less then $40

 

Here the roads are so rough we can`t get the magnet ones to stay on.

Pretty much all went to the wireless lights and bungee cord them on

I have two light bars that are hard wired one 8' wide for towing welders behind the truck with a lift gate.

The other 4' wide for using the Tacoma.