Can you backfeed a relay?
ricicle. A relay can keep circuits seperate and switch using another seperate circuit. The individual circuits can also be over ridden without switching the other circuits. You have two outside lights A + B that are switched by a single timeclock.
Where do you run the wire from a relay?
The diagram shows two leads coming from the relay. Then I run the second wire of the lights or other accessory to a good ground on the frame of the vehicle. If the wires will not be soldered together and crimped connectors will be used it’s a good idea to put a dielectric paste on the connectors where they come in contact.
What to do if your electrical wiring is loose?
Make sure your connections are well made. A loose connection will also cause shorts and create burnt wires which could result in a potential fire hazard. Twist wires together using pliers before screwing on any wire nuts, this ensures a good connection.
What should I do if my relay goes bad?
Step 7 – The relay is mounted in four electrical terminals housed in plastic and when overheated (due to overload or resistance caused by a poor connection) can distort and melt. Step 8 – Use as small metal scribe or tool to scrape clean any corrosion to ensure a good connection once the new relay is installed.
What to do when two wire accessory is not working?
When a particular two wire accessory is not operating, use a grounded test light to check for power at the wiring harness (either wire). If there is no power, the electrical system must be tested starting with the fuse then the relay.
How do you connect a relay to a battery?
Attach one spade connector to relay terminal 86 (coil +). Attach the other to relay terminal 85 (coil ground). Touch the 86 wire to the battery’s positive post, and the 85 wire to the battery’s negative post. Actually, unless the relay has a diode in it, it won’t matter if the polarity is switched; the electromagnet will be energized regardless.
Why are the wires on my relay not clicking?
But if it’s not clicking, the problem could be in the relay itself or in the wiring. You need to figure out which. To test the relay itself, take two wires, each about a foot long with a female spade terminal at one end and stripped at the other end.
What kind of wire should I use for a relay?
Number one, make sure you use wire that is rated for the amperage that the accessories is going to pull. It is always better to have wire that is OVER rated rather than wire that is not rated high enough.
When do you need to troubleshoot a relay?
That is, on a horn, 12V should always be present on 86, and 85 is grounded when the horn button is pressed). If the control side fails either of these tests, you must troubleshoot the wiring. Often it is a problem in whatever is switching the control side on and off.