Question about 1994 Ford F250 Supercab
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Posted on Jan 02, 2017
SOURCE: Trailer wiring 7 way
dO NOT SPLICE WIRES.. You bought a 45000 dollar truck, spring for a wiring T --25 bucks.. ( plugs between main harness and Tail lights.. ) --Available at most good auto parts.. Painless wiring also has a kit.
If you did already cut or splice into your wires, take that **** loose.. Shrink wrap the dammage.. Silicone over srink wrap.. Wire will corrode.. if you did manage to get spliced wires to work,-- in a few years or sooner you will have issues with the connections..Can you say short circuit.. Moisture and loose connections are a thing of the past with sealed tap in wiring.. Plug and play..
If any of this is over your head, get a friend who knows, or a tech to help.. Don't jerry rig a 45,000 dollar new Truck.. Come ON..!!!!!
Posted on Sep 18, 2008
I need to know if the other gauges are accurate. There is a voltage regulator mounted on the back side of the dash that can go bad and often does, that will make the other gauges inaccurate also.
Posted on Dec 02, 2008
SOURCE: 2002 Mustang blowing PCM fuses
Ok the 30 amp fuse is the switch side of the PCM relay and the W/BL wire u are disconnecting is the coil side of the relay.So when u disconnect it u are keeping the relay from energizing so this is not the problem.When u unplug the CCRM in the fender u also keep the relay from energizing.
Unfortunatley this could be the worst possible ckt to have a short on because it feeds everything with a 12V feed in the emission system.
It feeds all the coil packs,the coil side of the low and high speed fan relays and coil side of AC relay also in the CCRM.
Now looking at the schematic I think it is possible to narrow your problem down to the coil packs.The other ckts off of this go thru 2 more fuses, fuse 8 and 2 in the interior fuse panel and both of these are 20 amp fuses so they should blow before the 30 amp if the short was after them. Although it could be the CCRM I doubt it would blow the 30 amp fuse because the other feeds there are on the coil side of the relays so that leaves the coil packs.
I would trace the red wire side of each coil pack looking for a pinched wire,they will go back to right side of engine into a square 42 pin connecter.A quick way to test it is to unhook all the coil packs then get you 2 alligator clip wires and a 1157 bulb like in your t/signals. Clip one of the wires on each side of the bulb and hook one wire to power then the other to the red wire pin 24 of the CCRM that u unhooked in the fender(leave CCRM unhooked). Pull the 2 fuses in the interior fuse panel (8&2) then see if your bulb lights. If it does then u have a short in the wiring,if it doesn't then hook each coil pack back up one at a time and see if it lights your bulb.
Posted on Feb 11, 2009
Try an alternate ground wire for testing . Ground it to good ground on one end & then attach to body (metal) of radio & see if that works. You know you will have 2 or more power wires to that right? I constant & one switched at least.
Posted on Sep 09, 2009
Testimonial: "Thank you very much...very very helpful!!!"
It need to go to the engine itself,but it always good to add a extra ground from the engine to the frame,I hope this helps you
Posted on Nov 03, 2009
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