ignition switch replacement or mod?

Hafi mods and resto work reports

Moderator: TechMOGogy

Post Reply
User avatar
audiocontr
United States of America
Posts: 1868
Joined: Fri May 01, 2009 1:30 pm
Location: Buffalo NY

ignition switch replacement or mod?

Post by audiocontr »

My ignition switch is touchy, it only fully engages when turned all the way to the right, otherwise you need to press and hold the key to make contact. A proper bump will cause the switch to lose contact and it dies.

Are replacement units easily available?

Could i keep the stock unit for light operation and install a new key for ignition?
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
User avatar
TechMOGogy
Canada
Posts: 2831
Joined: Wed Feb 01, 2012 11:39 am
Location: Ontario, Canada

Re: ignition switch replacement or mod?

Post by TechMOGogy »

Haflinger Technik has replacement units
SAV may as well?
http://www.haflingertechnik.com/html/index.php
72 Pathfinder | 75 710M 2.7i | 96 350GDT Worker
User avatar
audiocontr
United States of America
Posts: 1868
Joined: Fri May 01, 2009 1:30 pm
Location: Buffalo NY

Re: ignition switch replacement or mod?

Post by audiocontr »

The switch works fine for the lights, its only the ignition circuit that cuts out. I'm giving thought to a hidden switch to energize ignition and bypass the key all together. I'll need to take a look at the wiring diagram to determine how feasible...
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
M Wehrman
United States of America
Posts: 847
Joined: Thu Apr 15, 2004 9:46 pm
Location: Gilbert, Az.

Re: ignition switch replacement or mod?

Post by M Wehrman »

Take it apart and clean and readjust the contact,lube with silicone grease.
Mark
Stock means no imagination!


Volvo TGB1317, .95% Morphed!



68 Haffy
Heinkeljb
Great Britain
Posts: 391
Joined: Wed Feb 27, 2013 1:09 pm
Location: Lewes,Southern England

Re: ignition switch replacement or mod?

Post by Heinkeljb »

Another way to deal with it is to take the start function away from the old switch and put a start button in and just leave ignition running through the original switch.

Only issue would be where to put the start button?

Make another hole in the dash to take it
Make a bracket to hold the switch off the side or bottom of the dash?
Fit it in the extra hole behind the handbrake on the platform?
Use another foot operated switch like the dip switch?

John
User avatar
audiocontr
United States of America
Posts: 1868
Joined: Fri May 01, 2009 1:30 pm
Location: Buffalo NY

Re: ignition switch replacement or mod?

Post by audiocontr »

welllllll

There is a start button. I assumed it was supposed to be there. :D Looks like someone beat me to it!
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
User avatar
audiocontr
United States of America
Posts: 1868
Joined: Fri May 01, 2009 1:30 pm
Location: Buffalo NY

Re: ignition switch replacement or mod?

Post by audiocontr »

https://goo.gl/photos/BeKqXPUTi3mDZrcp9

See the last photos in the album. I added an extra Kubota ignition switch I had laying around to a spare part from our grill, and mounted behind the dash. :D Works great. Much more bump friendly. The original ignition still turns on the lights.
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
Heinkeljb
Great Britain
Posts: 391
Joined: Wed Feb 27, 2013 1:09 pm
Location: Lewes,Southern England

Re: ignition switch replacement or mod?

Post by Heinkeljb »

Biggest problem you have is finding a wiring diagram which actually matches your Haf! A lot of Haf's over the years have had "modifications" to them including wiring additions / changes and I bet you they weren't documented!

So once you have a rough idea of the wiring from one of your wiring diagrams that at least matches your ignition system, then you can trace the physical wires behind your dash.

I think you need to do a bit of tracing with a multi meter on the wires running from the regulator to the dash as you describe what sounds like a short circuit and then when the fuse blows, the electrical load is taken off the engine so the revs increase.

The start button is quite easy as all it has to do is act as a switch to apply electricity to one side of the coil of the starter solenoid, the other side of the coil of the starter solenoid goes to earth.

John
User avatar
TechMOGogy
Canada
Posts: 2831
Joined: Wed Feb 01, 2012 11:39 am
Location: Ontario, Canada

Re: ignition switch replacement or mod?

Post by TechMOGogy »

audiocontr wrote:welllllll

There is a start button. I assumed it was supposed to be there. :D Looks like someone beat me to it!
Swiss Hafi's have a starter button from the factory :wink:
72 Pathfinder | 75 710M 2.7i | 96 350GDT Worker
Post Reply