Then add in the years of corrosion at connections, wear at the light and dimmer switches and the amount of resistance in the circuit goes way up. Very small considering todays lighting requirements. Pretty much all of the other manufactures used 16 or 14 gauge wire on the headlamps. Tri five Chevy's are a bit under wired to the headlights from the factory. However, many cars suffered from dim lights from the factory. Many people will just try to copy what their car had. Too small a wire can cause resistance, low voltage, and dim lights. Third, make sure you use the right gauge wire. Just get the good Bosch 30 amp relays anywhere. Relays are simple to wire into the front harness. That's because ignition systems are more powerful, headlights need more power, etc.
Basic brake light switch wiring diagram full#
Now you have lots of power and full voltage.
Basic brake light switch wiring diagram free#
Instead of the power having to go through all kinds of connections, switches, tons of wire, etc., you create a short path for it to go, free of all that other stuff. That's why so many people have trouble with dim headlights.īasically, what you are doing with relays is supplying a short cut for the power. Only a 2 volt drop in a 12 volt system is a 17% loss in voltage to the headlights. If you have too big of a draw at the fuse panel already, you won't have full voltage and you're gonna have dim lights. Second, make sure you are able to tie into good power. So, make sure you are starting out with good stuff. When I would try to figure out what was wrong, I had the door open, the switch cooled back down, and worked fine. Then, when I was running down the road for a while, the heater would finally make it warm enough under the dash that the corrosion in the switch would shut off the power. However, it worked just fine when it was cold. Lots of fun on the highway.įinally, I figured out that what was happening was the light switch itself had corrosion inside it where you couldn't see it. I would be driving along, and all of a sudden, all the lights would just go out. I once had a Jeep that wasn't all that old. If you have an older car, corrosion can be a major problem. We're gonna help you through those items.įirst off, make sure you have good switches, light housings, connectors, etc. However, there are some things that can screw everything up if not taken into consideration. Wiring up your lights doesn't have to be too complicated.
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