 Ford Solenoid Hot Start installation instructions, Mark Henry's method |
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| Mark Henry |
 Apr 24 2017, 05:12 AM
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#1
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that's what I do!  Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada  |
Because this comes up so often I decided to make a tutorial on how I install the Ford solenoid.
The Ford solenoid fixes the common hot start problem of Bosch starter solenoid and it also reduces the load on the ignition switch. Although these instructions are for the 914 all aircooled VW's and Porsche often suffer from this problem and with minor changes this can be done to any car. The issue occurs because the Bosch starter solenoid needs a full 9 volts to kick in. The combination of age, heat, corrosion, many connectors, a small ignition switch and wiring running to the dash and back can degrade the volts to less than the 9V required. The Ford solenoid only needs about 3 volts for the 12V version and even less for the 6V which for our purpose works no problem. My installation drills no holes in the car, not a single factory wire is cut, no in-line fuses, fully reversible and simple with no added bullshit. Please this is not a discussion on if you prefer the wimpy (IMO) Bosch horn relay, want to cut and hack in a new wire or believe throat singing Vajrayana chants is a better method, start you're own thread. Of course as with any electrical trouble shooting the first order of business is always clean all of your grounds and make sure the chassis to transmission ground strap is in place and in good condition. I'll start right away with the money shot of the completed installation to show how clean this can be done. Attached image(s) 
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| brcacti |
Oct 25 2019, 01:30 PM
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#2
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1974 914 1.8 Group: Members Posts: 674 Joined: 17-July 19 From: PHX AZ 60 miles south Member No.: 23,302 Region Association: Southwest Region |
Mark Henry, I'll come up to Canada and pay you to do it..................hehehe (IMG:style_emoticons/default/smile.gif) JUST kidding, looooong drive. Thanks to ALL who gave such valuable information.
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| Mark Henry |
Oct 26 2019, 08:00 AM
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#3
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(brcacti @ Oct 25 2019, 03:30 PM)  Mark Henry, I'll come up to Canada and pay you to do it..................hehehe (IMG:style_emoticons/default/smile.gif) JUST kidding, looooong drive. Thanks to ALL who gave such valuable information. I accept beer money (IMG:style_emoticons/default/wink.gif) (IMG:style_emoticons/default/laugh.gif) (IMG:style_emoticons/default/beer.gif) |
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Posts in this topic
Mark Henry Ford Solenoid Hot Start installation instructions Apr 24 2017, 05:12 AM
Mark Henry This is a Ford solenoid very common fender mounted... Apr 24 2017, 05:26 AM
Mark Henry I added a point about running the wire, make sure ... Apr 24 2017, 11:59 AM Mark Henry First thing you need to do is enlarge the one hole... Apr 24 2017, 05:30 AM Mark Henry Then cut the bracket about 3/4" to 1" as... Apr 24 2017, 05:39 AM Mark Henry Once done you can hang it off the bottom starter m... Apr 24 2017, 05:42 AM Mark Henry Ring connectors from your local FLAPS seem to come... Apr 24 2017, 05:46 AM Mark Henry The best method to enlarge the ring connector hole... Apr 24 2017, 06:01 AM Mark Henry So these are the connectors needed, but in a brain... Apr 24 2017, 06:12 AM Mark Henry For crimping the wires go out and get proper crimp... Apr 24 2017, 06:18 AM Mark Henry For the wire I'm using 10 gauge multi-strand p... Apr 24 2017, 06:24 AM Mark Henry This shows how to connect the wire to the solinoid... Apr 24 2017, 06:32 AM Mark Henry if you are worried about the exposed hot positive ... Apr 24 2017, 06:35 AM Mark Henry This shows your existing main battery stock wire t... Apr 24 2017, 06:38 AM Mark Henry The factory yellow wire that was on the Bosch star... Apr 24 2017, 06:41 AM Mark Henry A couple of zip ties and you're done. :first: Apr 24 2017, 06:43 AM Mark Henry This is real simple to make and crimpers should be... Apr 24 2017, 06:54 AM Kansas 914
This is real simple to make and crimpers should b... Apr 24 2017, 07:14 AM StarBear
This is real simple to make and crimpers should b... Aug 4 2018, 07:51 AM StarBear
This is real simple to make and crimpers should b... Aug 12 2018, 09:43 AM jim_hoyland Great write up- Admins, please add this to the Cla... Apr 24 2017, 07:14 AM Mark Henry
Great write up- Admins, please add this to the Cl... Apr 24 2017, 09:49 AM jim_hoyland
Great write up- Admins, please add this to the C... Apr 24 2017, 10:28 AM 76-914
Great write up- Admins, please add this to the C... Jan 3 2018, 01:14 PM shoguneagle It does belong in the Classics! Great job com... Apr 24 2017, 07:43 AM ndfrigi thank you for sharing! Apr 24 2017, 10:07 AM SKL1 Thanks much Mark- on my way out to the garage... Apr 24 2017, 11:44 AM stinkindiesel Thanks Mark!
I mounted mine using a couple of... Apr 24 2017, 12:55 PM GeorgeRud I wonder if there's another design that would ... Apr 24 2017, 02:44 PM Mark Henry
I wonder if there's another design that would... Apr 25 2017, 03:30 PM 914GT A few more things to consider...
I like to use wir... Apr 24 2017, 03:29 PM RobW Nice work Mark! Classic for sure. Apr 24 2017, 03:32 PM HalfMoon Genius level hack.
Good on ya Mark!
:beer2: Apr 25 2017, 08:12 AM Harpo Nicely done Mark Apr 25 2017, 06:01 PM Mark Henry Thanks everyone :wavebye:
Just to calm some pee... Apr 25 2017, 10:28 PM Mark Henry I know I've said I dont like to cut factory wi... Apr 25 2017, 10:38 PM SKL1 Finished installing the new "Ford" part-... Apr 26 2017, 07:36 PM GeorgeRud Now that looks very sturdy and it's a beautifu... Apr 26 2017, 08:10 PM Rob-O Great write up. And to think, the money you spend... Apr 26 2017, 08:42 PM Mark Henry I added a link to this thread in my signature. :) Jul 5 2017, 10:07 AM jkb944t Mark--very impressive write up/ conversion. Someh... Jul 5 2017, 11:08 AM 11tenths I bet the Cap'n would approve, but Slits would... Jul 5 2017, 01:27 PM 76-914
I bet the Cap'n would approve, but Slits woul... Jan 3 2018, 01:24 PM Rand
I bet the Cap'n would approve, but Slits wou... Jan 3 2018, 01:30 PM moorepower The Ford solenoid is a great idea, and works with ... Aug 5 2017, 06:03 AM porschetub
Because this comes up so often I decided to make ... Aug 6 2017, 06:01 PM Mark Henry Standard SS-558 is the 6V single small post, works... Aug 7 2017, 09:53 AM porschetub
Standard SS-558 is the 6V single small post, work... Aug 7 2017, 03:07 PM Mark Henry One fail point I was told, but have no direct proo... Aug 7 2017, 08:56 PM 914Toy
One fail point I was told, but have no direct pro... Jan 2 2018, 05:22 PM Mark Henry
One fail point I was told, but have no direct pr... Jan 2 2018, 07:05 PM 914Toy
[quote name='914Toy' post='2563644' date='Jan 2 2... Jan 2 2018, 10:27 PM porschetub Ha Ha funny ,Chinese ones are out there,really mov... Aug 7 2017, 09:05 PM Tbrown4x4 The tabs are available at O'Reilly's Auto ... Aug 7 2017, 09:11 PM 11tenths Hey Mr. Henry- it worked!
Well, not at first.... Jan 2 2018, 04:36 PM gothspeed Nice and functional, i have too many stories on no... Jan 2 2018, 11:35 PM Mark Henry This drawing is mine from back in the early days o... Jan 3 2018, 10:09 AM Mueller Mark,
Would you recommend this setup for the Hi ... Jan 3 2018, 11:05 AM HalfMoon
Mark,
Would you recommend this setup for the Hi... Jan 3 2018, 11:12 AM Mueller
Mark,
Would you recommend this setup for the H... Jan 3 2018, 11:12 AM jkb944t Very nice write-up and I will add it to my to do l... Jan 3 2018, 11:47 AM StratPlayer My car has this mod. Jan 3 2018, 12:18 PM Mark Henry Just food for thought, or should I say math :)
V... Jan 3 2018, 03:34 PM HalfMoon
Just food for thought, or should I say math :)
... Jan 3 2018, 03:40 PM Lucky9146 Just an FYI
That I was about to order the Standar... Jan 18 2018, 01:45 PM HalfMoon So I've run across a (self created) problem an... Jan 25 2018, 05:42 PM Mark Henry
So I've run across a (self created) problem a... Aug 4 2018, 10:24 AM HalfMoon
So I've run across a (self created) problem ... Aug 4 2018, 03:10 PM Spoke
[quote name='Mark Henry' post='2635368' date='Aug... Aug 12 2018, 12:08 PM HalfMoon
[quote name='Mark Henry' post='2635368' date='Au... Aug 12 2018, 10:06 PM Mark Henry This is how my '67 bug is wired.
Also note the... Aug 4 2018, 10:50 AM North Coast Jim Mark I had this "start problem" and foun... Aug 4 2018, 11:06 AM Mark Henry You either still have something wired wrong or you... Aug 5 2018, 08:04 AM HalfMoon
You either still have something wired wrong or yo... Aug 5 2018, 08:14 AM Mark Henry I wouldn't worry about the engine running afte... Aug 13 2018, 05:54 AM Mark Henry The Ford solenoid just fixed the no start issue in... May 12 2019, 08:44 PM StarBear Ditto to several above and kudos to MH. Did mine t... Oct 25 2019, 06:46 PM oakdalecurtis i checked with Mark on the actual relay he used, I... Nov 18 2019, 04:19 PM brainf18 Mark, I've been fighting hot start (i.e. no st... Feb 22 2020, 08:06 PM Montreal914 Nice car! :drooley:
6" steel wheels? Feb 22 2020, 09:47 PM sixnotfour
Nice car! :drooley:
6" steel wheels?
... Feb 23 2020, 07:45 AM brainf18
Nice car! :drooley:
6" steel wheels?
... Feb 25 2020, 07:39 AM Mark Henry Ford used different mount brackets for different c... Feb 23 2020, 09:40 AM pcdarks Not to beat a dead horse but I found this solenoid... Jan 6 2021, 11:13 AM barefoot
Not to beat a dead horse but I found this solenoi... Jan 7 2021, 12:26 PM rhodyguy This thread should be in the Classic Forum. Jan 6 2021, 11:32 AM Mark Henry
This thread should be in the Classic Forum.
:c... Jan 6 2021, 03:00 PM rhodyguy Not removed from here, shared in the classic. Jan 6 2021, 03:16 PM black73 The Classic Forum should be a sticky at the top of... Jan 6 2021, 03:40 PM Shivers I got introduced to the hot start problem in 1982.... Jan 29 2021, 09:49 AM Mark Henry
[quote name='pcdarks' post='2880891' date='Jan 6 ... Jan 29 2021, 10:07 AM 914Sixer Another option is Bosch WR1 starter Kit. $27... Jan 29 2021, 10:03 AM Mark Henry Cool tool that every 914 owner should (at minimum)... Jan 29 2021, 10:16 AM ClayPerrine I just use a IMI gear drive starter. No hot start ... Jan 29 2021, 10:52 AM Olympic 914 (Deleted Irrelevant post... ) :confused: Jan 29 2021, 06:12 PM Mark Henry
Another option is Bosch WR1 starter Kit. $2... Mar 29 2021, 02:40 PM LefthandRev Did this today. Used a $17 solenoid from O... Sep 5 2021, 04:13 PM Mark Henry Just had my first no start in ages, had to get a p... Sep 6 2021, 06:29 AM |
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