Question about 1988 Ford F 150
New battery and wires fuses good but no power going to switch at all
Bad fusible link near the positive battery cable or faulty ignition fuse.
Posted on Nov 20, 2013
Check the fuses and the relays. and finally the ignition switch, its rare but the little wires get loose or broken, and send no electrical power to the switch
Posted on Nov 20, 2013
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Posted on Jan 02, 2017
Solenoid was not mentioned as replaced.
If it was not part of new starter...that's the culprit.
Ignition switch (smaller wire) activates the solenoid (heavier wire) which in turn activates the (high current) starter.
Posted on Feb 28, 2009
If its not on the steering column, you can figure it out using an ohmeter on the switch leads. Actually, you could figure out the one on the column that way too! just think about what the switch does in each position and attach wires that do it to the post that does it! IE: starter solenoid wire goes to post that is hot when key is turned all the way to start. Main hotlead is the one that is common to all switch positions. run and accessories is to the post that is hot with key on, accessory only is the one only hot with key turned backwards.
Posted on Mar 21, 2009
There is also an ignition relay, a coil, and the wiring harness it's self. Check to see if the ignition can be by passed by using a test light first to find the hot side of the ignition fuse. See if there is power there it should be constant all the time but it only makes the connection when you turn the key. If it does it's probably your relay. You are aware that there is two fuse blocks for the ignition. If there is no power to either fuse block i would buy another ignition switch (you can always take it back).. and if still nothing i would replace the harness.. hope i could help. oh one other thing check the ignition module.
Posted on Feb 04, 2010
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