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There isn't one. A relay is an electronic switch that uses a low amperage or low voltage current to operate contacts to a larger amperage cable. your accessory socket is just a direct cable to a 12 volt power source. The usually have a fuse inline to the cable or sometimes in the fuse box. You should be running anything higher than a couple of amps.
What is a car relay? In the most simple terms an automotive relay is an electronically operated switch. The type most commonly used in the automotive industry is an electro-mechanically operated switch. They are found in all types of vehicles - cars, trucks, vans, trailers and boats.
May 1, 2019
Like answer #1, when I bought my 1993 Jeep Cherokee, one of the first things I ended up doing was go to & join the
cherokeeforum.com, i.e. cherokee-forum-dot-com....
I've found that whenever I need advise, or answers to any questions with my vehicles, I look for the forum for that vehicle. 99.9% of the time the folks in the forums give you honest answers..... I even subscribe to a few YouTube Channels, like the one for my 93 Cherokee. That guy is not only smart when it comes to 1990s-2000s Jeep Cherokee's/XJs, he's always doing some sort of repair or modification to one of his Cherokee's or Grand Cherokee's..... Hope this helps all you Jeep XJ Folks out there....
Car will not start how ? A crank- no - start or a no crank - no - start < meaning when you turn the key to the start position does anything happen ? Starter engages an spins the engine an doesn't start an run ! Or when you turn the key to start the position nothing happens ? Who told you it was a fuse ? Are there any light's lit on the instrument cluster , SECURITY ? If Nothing happens Find the starter relay an jump pin's 30 & 87 , if nothing is wrong with starter , battery , battery cables it should spin the engine . Is your vehicle automatic transmission or stick ? Automatic has a neutral safety switch , won't let vehicle engine spin unless in park or neutral . Manual has clutch switch , won't let starter engage unless the clutch pedal is pressed . Both of these switches can go bad . There are videos on youtube on basic electrical trouble shooting . Also on testing starter circuit . How to voltage drop test starter motor circuit
They should be coming off the back of the alternator,or on the starter(large positive cable),,or follow the positive cable from the battery to a junction,they will be there.
First thing is your van equipped with a trailer brake controller and is it working. This is usually a small box that is installed inside the vehicle and is needed to operate the brakes. Next what type of plug do you have on the vehicle to plug the trailer into some plugs do not support wiring for trailer brakes. If you have a aftermarket trailer brake controller it will not be fused in the fuse panel so you will to locate a inline fuse used to power up the controller. Hope this helps.
Hi
DO NOT put a bigger fuse in ,you need to find out why the fuse blew in the first place,it is unlikely to be the starter motor,it could be a bad connection,the mercedes all have problems with the ignition switch assembly this is more likely.
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