Where is the starter selay switch located ? - Cars & Trucks

1. Locate the relay panel: The relay panel is usually located near the battery and is often marked with a diagram of the various relays.
2. Identify the starter relay: The starter relay is typically marked with an "S" or "ST" on the panel or cover.
3. Check the wiring diagram: If you're having trouble locating the starter relay, refer to the vehicle's wiring diagram for help.

If you're still unable to locate the starter relay, it's recommended to consult a repair manual

The key lock cylinder operates the ignition switch sometimes ignition switch is separate sorry I didn't find where ignition switch is located if the lock cylinder is plugged into it.
You should have a starter relay and starter relay fuse.
This diagram of starter circuit shows the clutch pedal switch in the circuit on an automatic should have the neutral safety switch in the circuit. This is for 95 Rodeo.
Stater Motor Circuit Diagram (1995-1997 2.6L Isuzu Rodeo) (easyautodiagnostics.com)

How do I remove the key ignition cylinder? ' Isuzu SUV Forum (planetisuzoo.com)
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Starter and solenoid
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Starting System & Wiring Diagram - YouTube

Ignition switches are where you put your key in.most of the time if its older then 2010

the neutral switch is located in the left side of the transmission and its connected to the shift cable.

When you go to start the engine you are actually sending power from the ignition switch through a 20 amp fuse [crank fuse] then through the Park/Nuetral safety start switch and finally to the starter relay [located at the center rear of the engine compartment] This relay then sends a more powerful current flow down to the starter solenoid located on top of the the starter which then closes and allows full battery voltage from the large battery cable to energize and spin the starter. I don't think I've ever had to replace a starter relay on these but have replaced a large number of starters with bad solenoids and bad Park/nuetral switches. The "crank" fuse could also be bad but that is also pretty rare.

Ignition switch and neutral safety switch. Next time it happens wiggle thekeys in the ignition switch and try to restart.If it starts its probably the ignition switch. Then locate neutral safety switch on brake pedal and put meter on B+ wire from switch to starter relay and see if you get B+ on the would -be- crank. Next locate B+ wire from starter relay to starter hook a meter to it and see if you get B+ on the would -be crank.
Where ever B+ is missing is your problem.

1991 Ford F150

Vehicle Battery Positive Wire (+): Yellow
Vehicle Battery Positive Wire Location: Ignition Switch Harness
Vehicle Ignition Wire (+): Red/Light Green
Vehicle Ignition Wire Location: Ignition Switch Harness
Vehicle Second Ignition Wire (+): N/A
Vehicle Second Ignition Wire Location: N/A
Vehicle Accessory Wire (+): Gray/Yellow
Vehicle Accessory Wire Location: Ignition Switch Harness
Vehicle Second Accessory Wire (+): N/A
Vehicle Second Accessory Wire Location: N/A
Automobile Engine Starter Wire (+): Red/Light Blue
Automobile Engine Starter Wire Location: Ignition Switch Harness
Automobile Second Engine Starter Wire (-): N/A
Automobile Second Engine Starter Wire Location: N/A
Factory Anti-Theft System: None
Factory Anti-Theft System Type: None
Car Key Sense Wire (-): Black/Pink
Car Key Sense Wire Location: At Steering Column Harness
Car Neutral Safety Wire (+): N/A
Car Neutral Safety Wire Location: N/A
Car Tachometer Wire (-): Tan/Yellow
Car Tachometer Wire Location: At Ignition Switch Control Module in Driver Fender Well
Car Speed Sense Wire: Gray/Black
Car Speed Sense Wire Location: Pin #3 at PCM Mounted on the Firewall
Car Parking Lights Wire (+): Brown
Car Parking Lights Wire Location: At Headlight Switch or Driver Side Kick Panel
Car Brake Lights Wire (+): Green
Car Brake Lights Wire Location: At Brake Switch Above the Pedal
Car Reverse Lights Wire (+): Black/Pink
Car Reverse Lights Wire Location: At Switch on Transmission
Car Horn Wire (-): Blue
Car Horn Wire Location: At Steering Column Harness

Sorry friend, this is as far as i can go to tel you how to hot wire the ignition. But with the color codes you should be able to figure it out, Good luck and keep me posted.

On most Ford/Mercury auto's thre relay switch in on the starter, sounds you are not getting a good ground.

Next thing to try would be the neutral safety switch located on the trans

Here are detailed, step-by-step instructions for the removal and re-installation of your starter motor. Hope this helps! Have a great day!

Starter Toyota Previa 1991-1997 Repair InformationREMOVAL & INSTALLATION
See Figures 5 through 12

1. Disconnect the negative battery cable from the battery.
2. Raise and safely support the vehicle.
3. If equipped with 4WD, remove the front driveshaft.
4. Remove the nut and disconnect the starter wire.

Fig. 5: Disengage the starter wiring

1. Disconnect the starter connector.

Fig. 6: Remove the cap hiding the nut Fig. 7: It will be necessary to use an extension to remove the nut

1. Remove the bolt holding the starter stay to the upper stiffener plate.
2. If equipped with 2WD, remove the starter by removing the nut and three bolts.
3. If equipped with 4WD, remove the starter by removing the nut, four bolts, and the center bracket.

Fig. 8: Four bolts hold the starter in place Fig. 9: The nut is located on the top of the starter Fig. 10: Extract the starter from the engineTo install:

1. If equipped with 4WD, install the starter, the center support bracket, nut, and the four bolts. Tighten the bolts as follows:
   • Bolt A to 41 ft. lbs. (56 Nm)
   • Bolt B to 30 ft. lbs. (41 Nm)

Fig. 11: Bolt locations on the 2WD models

1. If equipped with 2WD, install the starter, nut and three bolts. Tighten the bolts as follows:
   • Bolt A to 41 ft. lbs. (56 Nm)
   • Bolt B to 30 ft. lbs. (41 Nm)

Fig. 12: Bolt locations on the 4WD models

1. Install the bolt to hold the starter stay to the upper stiffener plate. Tighten the bolt to 43 inch lbs. (5 Nm).
2. Install the starter connector.
3. Connect the starter wire with the nut. Tighten the nut to 78 inch lbs. (9 Nm).
4. If equipped with 4WD, install the front driveshaft.
5. Connect the negative battery cable.

SOLENOID REPLACEMENT
The starter solenoid (magnetic switch) is an integral part of the starter assembly.

1. Remove the starter from the van. Remove the heat insulator from the starter assembly, if equipped.
2. Disconnect the wire lead from the magnetic switch terminal.
3. Remove the two long, through bolts holding the field frame to the magnetic switch. Pull out the field frame with the armature from the magnetic switch.
4. Toseparate the starter housing from the magnetic switch assembly, remove the two screws and the starter housing with the pinion gear (1.6 kW), idler and clutch assembly.

To install:

1. If necessary, install the gears and clutch assembly to the starter housing. Apply grease to the gear and clutch assemblies and place the clutch assembly, idler gear, bearing and pinion gear (1.6 kW) in the starter housing.
2. Insert the spring into the clutch shaft hole and place the starter housing onto the magnetic switch. Install the two screws.
3. Install the field frame with the armature onto the magnetic switch assembly and install the two through bolts. Tighten the bolts on the 1.4 kW to 52 inch lbs. (6 Nm) and on the 1.6 kW to 82 inch lbs. (9 Nm).

There is a protrusion or tab on each part; make sure you line them up correctly during assembly.

1. Connect the wire to the terminal on the magnetic switch and tighten the nut to 52 inch lbs. (6 Nm). Install the heat insulator, if equipped.
2. Reinstall the starter on the vehicle. Check starter system for proper operation.