Good question it will always have the schematic picture of it so 30 and 87 are always going to the fuel pump and 8685 goes to power and ground but you can always look up the diagram of it on Google of the relays thank you so much good question
There's always a picture of the schematic on the relay you can also measure voltages but that might be very deceiving if you're not technical on the pins of the relay what I suggest is you always go to a diagram from Google for this section of fuel pump relay your modeling and make of your car and also relay pinouts thank you so much
Now i have a 98 sonoma and fuel pump is good and i can jump the relay 87 to 30 and pump kicks on then and only fhen with a jumper wire i put new ignition switch and ignition switch wire and new rotor and cap but no spark or fuel idk what to do ive looked and nothing good grounds too if anyone can help a fella out that'd be awesome
The fact that the fuel pump comes on with a jumper wire says that either the relay or a sensor or a power control module is not turning on the relay the coil side at this point I would not worry about spark I would worry about fuel pressure when you jumped it and it came on that means the contact switch of the relay was closed when you did it but the other part is not functioning properly again that could be a module ascensor a crankshaft sensor could be aground a separate ground for that coil circuit of the relay if you can measure unpin 30 the voltage you would know if the relay is coming on
It would be much easier bias I assume you don't have a fuel pressure gauge to measure the fuel pressure and right away you know if all those circuits are working correctly try to measure pin 87 + 30
I'll try to give examples so the people who don't have any background in electronics or schematics will understand a little easier that's why I go sometimes off-topic you would be surprised how many people are beginners and I'm not familiar with the symbols of the schematics and what I'm referring to so I have to make it as easy as possible
![How To Test and Diagnose Relays and Wiring [4 & 5 Pin]](http://i.ytimg.com/vi/S-DwV0HLsE4/mqdefault.jpg)
So glad I saw this video before attempting to jump the fuel pump! I wouldn't have realized the pins are diagonally across.
Never learned so much so fast about electric/ current flow , great teacher
I need to try to get my fuel pump to kick on for testing purposes. Gonna try this & see what happens. Thanks for the info. Fingers crossed!
Make sure to cross the short out the correct wires
thanks for the videos - I am learning a lot
Extraordinary detail !
Super helpful !!
I learned lots !!!
Thanks mate.
👊🏼 🔥 ⚡️ 🔑
Great teacher
I appreciate your comments so much thank you so much
I have a 2000 jeep Cherokee limited it has 2 87 a and 87b how do I know which to choose
This on the 1968 beetle?
Great video
hi i want jump a 5 pin which 2 would i jump i have a 86a extra thanks
If you have pins 87 to 30 on the condition of the load is connected to pin 30
Thanks teacher
Quite welcome
My ford relays are labeled 1,2,3,4,5 even on a diagram on the sides of the relay not 87,30 so forth?
Pins one and two are the coil,345 are the contacts,the switch that toggles
Thanks I'm up and running until I get to parts house! Thanks again
Where did you find the wiring diagram?
I'm usually go to Google or sometimes I have the diagrams from the dealerships
Even I can test the relay it self by passing B+ and ground to solenoid pins , and listen to (tik )sound or not !
Okay what if I do not have any markings on the relay what do you do then
Good question it will always have the schematic picture of it so 30 and 87 are always going to the fuel pump and 8685 goes to power and ground but you can always look up the diagram of it on Google of the relays thank you so much good question
There's always a picture of the schematic on the relay you can also measure voltages but that might be very deceiving if you're not technical on the pins of the relay what I suggest is you always go to a diagram from Google for this section of fuel pump relay your modeling and make of your car and also relay pinouts thank you so much
where is the video showing how to put a wire in 87?
Hello how can I get this book
On this book is my original book from automotive school you can try and go online put in automotive electronics a systems approach
Thank you
Now i have a 98 sonoma and fuel pump is good and i can jump the relay 87 to 30 and pump kicks on then and only fhen with a jumper wire i put new ignition switch and ignition switch wire and new rotor and cap but no spark or fuel idk what to do ive looked and nothing good grounds too if anyone can help a fella out that'd be awesome
The fact that the fuel pump comes on with a jumper wire says that either the relay or a sensor or a power control module is not turning on the relay the coil side at this point I would not worry about spark I would worry about fuel pressure when you jumped it and it came on that means the contact switch of the relay was closed when you did it but the other part is not functioning properly again that could be a module ascensor a crankshaft sensor could be aground a separate ground for that coil circuit of the relay if you can measure unpin 30 the voltage you would know if the relay is coming on
It would be much easier bias I assume you don't have a fuel pressure gauge to measure the fuel pressure and right away you know if all those circuits are working correctly try to measure pin 87 + 30
This is why college takes 4 years
Usually you learn this in a technical college now they teach in it in 2 years or less 2 years
Lmao. So true.
9v battery works two
Relay
I received your comment but I'm trying to understand what you meant by relay
Why can't you show me it on the truck I dont know any of what ur showing
Repeating same info over over could have been a lot shorter
Repeating yourself to many times
I agree with you
I'm not sure!
Try to refresh my memory you're not sure about what
not the topic but goes off topic...ffs,get on with the topic.
I'll try to give examples so the people who don't have any background in electronics or schematics will understand a little easier that's why I go sometimes off-topic you would be surprised how many people are beginners and I'm not familiar with the symbols of the schematics and what I'm referring to so I have to make it as easy as possible
Thank you