Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [relay]

Electrical device which, when energised by a small electrical current, safely switches a larger electrical current.

2
votes
0answers
28 views

Relay coil resistance measurements?

My relay 5 pin has 12v 10 amps input rating. And, I measured its coil voltage with multimeter giving about 650 ohms. Now, I connect the relay to car battery 45 ah. Surprisingly, the current through 86 ...
2
votes
0answers
32 views

2014 Hyundai Tucson cooling fan not running

So our 2014 Hyundai Tucson (GDi) cooling fan does seem to come on when it's hot or when the ac is on. The ac only blows cold when the car is moving and the car sometimes overheats when idling. I had ...
1
vote
0answers
26 views

Mitsubishi Outlander 2012 ES / Hearing relay click sound from the back every time I press the brake pedal?

I just purchased a used Mitsubishi Outlander 2012 ES with leather seats and 4WD. I never sat in one before. Is it normal to hear a relay click at the back of the vehicle every single time I press on ...
0
votes
0answers
9 views

Flasher Relay Wiring Diagram Help

This is a diagram for a flashing relay. Normally used for automotive, I'm curious if I can get it to work with my needs. I want to be able to start and continue the flasher with a 12V output, and ...
0
votes
1answer
8 views

Retrofitting an aftermarket rear fog lamp

I am planning to add two rear fog lamps with a combined current draw of 0.66 amps at 13.2 volts, which translates to roughly 9 watts. I can't really figure out how to run a wire from the trunk to ...
0
votes
0answers
10 views

1988 T-Bird clicking sound when key is on

I accidentally drained my battery so I charged it and went to drive it car died when I went to drive. Now it makes a loud clicking noise and won't stay running. I don't think I put a good charge to ...
2
votes
1answer
20 views

2002 Kia Spectra 1.8: No power to the control side of my fuel pump relay

I have isolated the issue to no power coming in to the relay coil. I am having issues finding a wiring diagram, or a pcm terminals wiring diagram to help me further troubleshoot the issue. I'm only ...
0
votes
1answer
16 views

2003 Mazda 3 AC Relay Won't Close

I have a 2003 Mazda 3 with a strange issue. The AC wasn't working, and I found that the relay wasn't closing when the button in the cabin was pressed. The actual relay is fine. I opened up the relay ...
0
votes
0answers
8 views

Jeep cherokee 2004 crd sport Immobilizer relay

i have a Jeep cherokee 2004 crd sport... I am looking for Immobilizer relay part number and position. It seems near impossible to find the info, there not even a 2004 haynes manual regards
3
votes
1answer
55 views

1986 Corvette - ECM code 33 & 36

My vintage 1986 Corvette convertible recently developed a stumble that progressed to a no-run condition. It comes and goes sometimes starting but in a few minutes I get a SES (Service Engine Soon) ...
1
vote
0answers
382 views

Low beam headlights don't work. High work. Can't find the problem

Car: 2012 Ford Focus The fuse location under the passenger compartment works - I tested. I don't know if it's the headlight relay, but my car manual does not show a location. Unless it's listed under ...
1
vote
2answers
59 views

Starting an automatic for the lazy mechanic

I have an ignition problem with my 1985 Mk1 Golf Cabriolet Automatic (1.6 EW engine). I was watching a YouTube video where the mechanic was testing the crank position sensor in on of these cars (it's ...
2
votes
1answer
160 views

Is it possible to charge a small auxiliary battery with the alternator?

I want to charge a small 22AH AGM auxiliary battery just to turn on some light signals. I would like this battery to be charged by the alternator while the car is running. The problem is: the battery ...
1
vote
2answers
356 views

Honda Jazz 2007 - One headlight not working when dipped. Same bulb for full beam is OK, other light for dipped is OK

I've recently come up against a problem where the RH headlight on my 2007 Honda Jazz does not work when dipped. It is not a blown bulb, since the same bulb is used for full beam, which works. I don'...
1
vote
0answers
93 views

Suzuki TU250X motorcycle only cranks when engine turned over by pushing in gear (electronic ignition)

I have a 2000 Suzuki TU250x. It's had a intermittent problem using the electronic ignition to start the bike. Turn the key, hold in the clutch, lift kickstand, click the fuel pump relay switch, hear ...
2
votes
0answers
42 views

Why would this happen:

If anybody could help me understand this behavior, I'd be grateful: 2003 R1 5PW, Fuel-injected, has an alarm/immobilizer fitted, doesn't report any fault codes: Motorcycle would occasionally (three ...
0
votes
1answer
4k views

Wiring a 3 pin relay to power a dual horn from a stock switch (single-horn)

I am trying to implement a dual horn setup for my bike. The stock came with a single horn. I have with me a 3-pin relay(H-B-S) with me. I am connecting the positive from the battery to the B terminal, ...
1
vote
0answers
23 views

Kia rio 2012 engi. 1.4 power supply relay

Dears, I have checked a car kia rio 2012 using active test for engine in diagnostic tool all test are succeed except the power supply relay i tried to locate it but I failed. Could you help me to ...
2
votes
3answers
68 views

car power line after engine start

I want to install a circuit in my car and I need a 12V power line after I start the engine. I don't want this line to be powered when I turn the key on ACC/ON positions, only after the engine has been ...
2
votes
1answer
2k views

Run switch - 4 pin relay set up with 3 wires

Are there any issues with powering pins 85 and 30 from the same 12v wire? The starter on my friend's 1981 Yamaha XS45 was not working, so I upgraded to a modern solenoid. I followed all the wired with ...
3
votes
2answers
740 views

12V relay circuit not working

I have a pair of LED lights wired on my truck to a 12V 4-pin relay all correctly with a switch. The system worked great every time until I decided I wanted to add a small 5mm LED, so when I turned ...
1
vote
1answer
11k views

Why do we use a relay and switch to control on/off of horn circuit instead of using a simple swtich?

I know that a horn requires a larger amount of amperes to operate than many other electrical systems. I am reading a book and I stepped into this situation: ..shows a relay application in a horn ...
1
vote
0answers
34 views

Why do i have running,turn,and flashers but no headlights?

My 1994 grand cherokee has running lights ,turn signals, and flashers,but no headlights,high or low beam. ive replaced the relays in the distribution block checked all fuses. What am i missing or ...
1
vote
0answers
102 views

Is it necessary to clean underhood relay and fuse box from dusts?

A little history: My Chevrolet Aveo 2007 got into a strange state where it cranked, but did not start. It also had P0340 (Camshaft Position Sensor Code). Since, I did not see stable 12V on the Pink ...
4
votes
2answers
978 views

Wiring fog lamps with horn relay

I want to install fog lamp on my Maruti Suzuki alto 2009 model, but it did not came with any provisions for such modifications so I have to do it from scratch, the problem I am facing is that I cannot ...
4
votes
1answer
8k views

How to replace the door lock relay on Honda CRV 2005

I have a Honda CRV 2005 with the driver door power lock not working. Here are the symptoms: Power lock driver side doesn't work, but all other doors work fine, I can lock and unlock the driver ...
3
votes
1answer
103 views

Very Strange Starting?/Electrical Issue

I have a very unusual issue with my 1993 Toyota 4runner SR5 4CYL 4WD 5 Speed. I have had the car for a very long time, and recently I have had a very strange issue when starting the car and I can't ...
1
vote
2answers
5k views

Jumping solenoid to start scooter

My 125cc Chinese scooter doesn't start with the electric start button. However, when I short the two starter solenoid poles together, the scooter starts fine. I replaced the solenoid itself, but the ...
1
vote
0answers
66 views

ford focus 2003 new starter stays engaged new ignition switch,new wire harness to starter how to test starter relay

I have a 2003 Ford Focus. I recently installed a new starter motor, a new ignition switch, and a new wiring harness. The starter now stays engaged when I try and start the car. How do I check the ...
4
votes
1answer
533 views

What is the formula to determine a relay for aftermarket lights?

Looking at aftermarket Light Bars that do not come with any relays or switches so I can build a custom setup. Per research I didn't find this question asked before. The closest two questions I found ...
1
vote
1answer
35 views

Will this Relay circuit work?

I have a truck on which the rear turn signals are not very visible when the parking lamps are on. So I am trying to get the parking lamps to turn off while the turn signal is on. Below is the wiring ...
4
votes
1answer
1k views

Help tracking down a battery drain issue on a 2007 Vauxhall Corsa

I'm really hoping someone can help track down a battery drain issue with a 2007 Vauxhall Corsa. We've been back and forth to a Vauxhall garage with this car since we bought it and have had a hell of ...
5
votes
2answers
4k views

Positions of relays in fuse box of Honda Accord 2003

I think that I swapped the position of these two relays. Does anyone have any idea what the correct position for each of them is? I can't figure it out using the diagram on the box.
2
votes
1answer
75 views

Automotive Relays - Are they water resistant? Proper placement?

I have installed LED lights in my toolbox in the bed of my truck what are you if the relay is waterproof and where should I install the relay?
2
votes
1answer
813 views

Where is the wiper relay located on a 1995 mercury grand marquis?

I need help repairing the wipers on my son's 1995 Mercury Grand Marquis. I have checked all fuses and replaced both the wiper motor and multi-function switch. Does anybody know where the wiper relay ...
4
votes
2answers
74 views

What are the common causes of inconsistent/dead flashers?

My car's flashers does not work anymore. They started being inconsistent few days ago - but now are completely dead (except in rare cases where I manage to get 1 fast flash). Using my basis knowledge,...
3
votes
1answer
250 views

Subaru Impreza rear wiper relay?

I have a faulty rear wiper relay on an impreza, but I cannot identify it's part number. It's 12v, but what Amperage? It has a part number and details as follows 12V5B-1T 642N NILES JAPAN It ...
5
votes
1answer
4k views

Motorcycle won't start without jumping the solenoid

If my bike wont start but does start when I use the wrench on the solenoid trick; does that mean I need to replace the solenoid? I'm having trouble working this out as I'm new to mechanics and trying ...
4
votes
0answers
415 views

Toyota Celica ST185 problem, doesn't start [closed]

Hello i have a problem i own a Toyota Celica ST185 Carlos Sainz Limited Edition. (btw. English is not my national language so sorry for eventual errors). The problem is that car has problems with ...
2
votes
1answer
36 views

Draw more current than its original ouput

I am have a battery capacity of 9 Amps 12 V. Factory electrical system of the bike is DC (horn, indicator, etc.) + AC (head light). Now I have changed the remaining AC to DC. (light system with ...
2
votes
2answers
26 views

What type of connector / terminal end is this?

This wire comes off a automotive multi-pin relay block/connector housing. Requesting help to identify what type/name of connector it is. -Thanks
3
votes
2answers
1k views

Correct Relay Splicing Methodology (Backup Camera & Reverse Wire)?

Some of you may recall my previous thread where I asked what the best way to splice a webcam into the reverse wire of a car. While these questions are similar in topic, this one focuses in on the ...
5
votes
1answer
1k views

Diagnosing fuel pump relay on 2004 Acura TSX

My wife's '04 Acura TSX began having issues starting towards the end of last summer. It would turn over just fine, but took 5-10 seconds to actually start running. The problem was intermittent - some ...
3
votes
3answers
2k views

Issues with 2003 Ford Focus headlights

The problems started when we found out that my car had no dim lights even though the bulbs and fuses seemed to be perfectly fine, and so were my brights. So the mechanic somehow "jumped" my dim lights ...
3
votes
1answer
743 views

Brake lights no longer work on a Volvo V70

My car is an old (2001) Volvo V70. Last year I experienced intermittent failures of the brake lights, and it led my mechanic to exchange the break pedal switch. This seemed to work fine for some ...
11
votes
1answer
28k views

Meaning of relay acronyms: H-LP, E/G, DIM etc

I'm trying to get to know my fuse and relay boxes better. They're labelled, but the labels are mostly acronyms and shorthand, and googling any particular acronym gives a lot of mentions of common ...
6
votes
1answer
2k views

Golf MK4 Window Motor Click and Window wont open

First of all sorry for my english. I have a Golf mk4 1.4 16v 2 doors There are about two weeks that it started to make this click when i try to open the window and it just wont open. I tryed to ...
9
votes
1answer
1k views

Is it possible to repair an intermittent or flaky turn signal flasher relay?

Ouch, a new turn signal flasher relay is $65 at the local parts shop. Is it possible to DIY a repair of such a flasher relay?
7
votes
1answer
826 views

Why do cars still use mechanical blinker relays?

I think the electronic relays may be cheaper; and having less moving parts they are theoretically less prone to break. So, why do cars still use mechanical relays for turning lights?
2
votes
1answer
83 views

Relay for Auxiliary Fog lamps of 54 w (27W x 2 lamps)

I wish to install two LED Auxiliary Fog lamps of 27w each (54 w in total), for my motorbike powered through a 12V Battery. What type (capacity) of relay should be used for this. Kindly let me know.