Wiring a SW Tachometer

Includes wiring and battery, generating system, starting system,
ignition system, windscreen wipers, lighting system and instruments and gauges.

Moderators: reidy, Blacky

In the Shed
Posts: 1872
Joined: Wed May 16, 2012 10:18 pm
State: SA
Location: South Australia

Re: Wiring a SW Tachometer

Post by In the Shed »

Thanks Harv, might be the go!
S
A day in the shed beats a day at work!
In the Shed
Posts: 1872
Joined: Wed May 16, 2012 10:18 pm
State: SA
Location: South Australia

Re: Wiring a SW Tachometer

Post by In the Shed »

Took Harv’s suggestion and fired off an enquiry (no ability to send pictures) to Stewart Warner the other Sat evening, thinking I’ll probably not hear back. Bugger me got a response about an hour or so later saying there might be a wire missing but send the SW engineer some pictures.

Sent the pictures only to be told they don’t recognise the tacho. It must be an old one!! I may need a SW sender unit which is not made anymore so SW engineer suggested eBay!!

Back to square one with more head scratching :crazy:

Pulled the unit apart again and came to the conclusion the blue and green power the back light whilst the red and black go to a coil (via selector switch and various resistors.

In essence a moving coil meter where there is a pulse received from the dizzy side of the coil. So hooked it up and whacko it worked. Happy days. :thumbsup:
A day in the shed beats a day at work!
User avatar
Harv
Posts: 5019
Joined: Mon Oct 08, 2007 2:00 pm
State: NSW
Location: Sydney, Australia

Re: Wiring a SW Tachometer

Post by Harv »

Good outcome 8)

Cheers,
Harv
327 Chev EK wagon, original EK ute for Number 1 Daughter, an FB sedan meth monster project and a BB/MD grey motored FED.
Post Reply