News:

This forum is run by RPM and donations from members.

It is the donations of the members that help offset the operating cost of the forum. The secondary benefit of being a contributing member is the ability to save big during RPM Holiday sales. For more information please check out this link: Membership has its privileges 

Thank you for your support of the all mighty FJ.

Main Menu

3cv safety relay

Started by joebloggs, September 01, 2023, 05:00:42 PM

Previous topic - Next topic

joebloggs

Anyone know what signal the safety relays receives from the clutch switch?
1989 3CV

fj1289

Dude, with all these electrical questions you REALLY NEED to find a Yamaha FSM and study the wiring diagram(s).  The electrical sections are laid out VERY WELL and very clearly break out all the sub-systems.   

Pat Conlon

I don't understand the question, what signal?  It's a 12 volt electrical signal...on a normally open circuit.
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

joebloggs

Quote from: Pat Conlon on September 04, 2023, 10:33:57 AM
I don't understand the question, what signal?  It's a 12 volt electrical signal...on a normally open circuit.
I mean voltage, I don't want to find out the hard way that Yamaha reduced the voltage to the igniter
And yes, I need a good wiring diagram
1989 3CV

racerrad8

The ignition system voltage is full, battery voltage.

These engine and ignition system have been used in race cars for 30+ years and the are run from a bare bones wiring requirement and a toggle switch.

Randy - RPM
Randy - RPM

fj1289

Quote from: racerrad8 on September 08, 2023, 07:13:13 AM
The ignition system voltage is full, battery voltage.

These engine and ignition system have been used in race cars for 30+ years and the are run from a bare bones wiring requirement and a toggle switch.

Randy - RPM

Link to the bare bones system Randy referred to:

https://fjowners.com/index.php?topic=16278.0

And diagram for 84/85:

https://fjowners.com/index.php?topic=6477.0


joebloggs

Quote from: fj1289 on September 18, 2023, 03:16:16 PM
Quote from: racerrad8 on September 08, 2023, 07:13:13 AM
The ignition system voltage is full, battery voltage.

These engine and ignition system have been used in race cars for 30+ years and the are run from a bare bones wiring requirement and a toggle switch.

Randy - RPM

Link to the bare bones system Randy referred to:

https://fjowners.com/index.php?topic=16278.0

And diagram for 84/85:

https://fjowners.com/index.php?topic=6477.0



I've seen that a couple of times while looking for answers, tbh now I've decided to wait until a 1TX fairing turns up I will stick with the stock 3CV loom, no point in reinventing the wheel as they say, I'm going to still have to find a new home for the igniter under the fairing but by keeping the loom where it was designed it makes hiding the battery, fuel pump relay and starter solenoid a little easier.

Of course finding a 1tx fairing is going to take time, or a bit of luck
1989 3CV