Where's the best place to mount a starter solenoid?
Does it need to be protected from road dust and grit?
I bolt them to the underside of the front seat rear fixed floor board. They seem to last forever there.
Weatherproof. Can you mount it somewhere so you can use the existing batt & starter cables that are on the foot switch now?
I used a piece of the perforated U-channel and bolted it to the frame right under the starter button. The lead from the battery fits right to the solenoid, the stock cable runs from the solenoid to the starter. I had to bend the ring lugs 90 degrees for a good fit.
I cut a flap out of a plastic milk bottle, drilled it for bolt holes and slipped it under the starter button, as an insulator for the two posts on the starter button, and the top of the solenoid. Whether it is needed or not, it made me feel more comfortable.
I went one step farther after this, and bought a battery cut off switch. That way I can let kids sit in the car, and not worry about them hitting the starter button, and it is a great safety factor when the car sits for a period of time. On my 21, I drilled a hole to the left side of the starter button, on the floor section of the seat riser and mounted it there. I moved the battery lead to the cut off, and then a length of cable to the solenoid.
The spot I mentioned is where the foot switch is located. So the original cables fit perfectly.
The solenoids are sealed and impervious to damage by moisture or dirt.
I used the top 2 bolts that hold on the steering column to the dash on my pickup.It helps me as it hurts my back to get under something to repair it. I put it where it is easy to get to. I aint sure but I think may have filed out 1 hole slightly on the solinoid but it fit right in and works well. Saves the foot switch from burning up. Where ever you mount it, make sure it is grounded well.
Related but unrelated....using the solenoid discussed here, can any light duty electrical switch be used to fire the starter? For example, could a simple household doorbell switch used with a solenoid serve as a reliable starter switch?
Absolutely. The solenoid coil draws less than 1 amp. Any switch rated at 15 watts or more is fine.
I am using a tiny "micro" brand switch from Radio Shack hidden on the below seat panel of my '12. It is not noticeable unless you know what you are looking for.
Yes, any 12V NO push switch will work. I have mine mounted right next to where the floor switch was mounted using the same holes. I then mounted my switch on the seat riser where it can be reached but hard to see. This reduces the chances of accidental engagement.
I went the extra step of wiring my starter switch through the ignition switch.
Thanks gents. My plan is a tiny doorbell switch discretely mounted to the bottom of the coilbox. Just need to verify floorboard removal clearance.