Rewire issues on 89 900 ss

discussion about the 750 Sport and '89/'90 900SS, which share many mechanicals with the Paso series
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Rewire issues on 89 900 ss

Post by HIGHWAY89 »

I know now is the time to do motoelectric upgradebut money predicts just a slightly bigger cable, definitely an upgrade for this bike and carbies fcr41, one day
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Rewire issues on 89 900 ss

Post by HIGHWAY89 »

New slightlybigger cable is fitted from battery neg to rear engine thread, both rear earths scratched and connected, I'm going to unscrew the regulator from frame and refit wiring there next and then decide about coils, originals I pulled hi-tension cables out , not sure if I can reuse or not, if not, I may replace coils and maybe motoelectric cables if from one supplier? It's all the postage that's blowing out the cost on this bike!, cheers
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Rewire issues on 89 900 ss

Post by HIGHWAY89 »

Just having another look at the top view pic of the wiring to battery terminals , I think the wire cabletied to the main power cable is wrong, ( the wire that says + pos), I'm thinking that goes somewhere else, in the strip down pics I only have 2 wires at pos battery terminal, and I'm yet to fit the small wires that go from battery terminal to regulator
User avatar
paso750
paso grand pooh-bah
Posts: 5558
Joined: Sun Jul 18, 2004 12:00 am
model: 750 Paso
year: 1987
Location: southern Germany

Re: Rewire issues on 89 900 ss

Post by paso750 »

According to the wiring schematic there are 4 cables connected to battery +. One goes to the regulator, one to the starter solenoid, one to the fuse box and another goes to the fused relay that feeds the ECU/coils etc.
Of course that the schematic shows it this way does not necessarily mean it was done this way. You have two cables connected to the starter solenoid. One is the cable to the battery. Is the second connected to the fuse box? What does the +Pos cable connect to?
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Rewire issues on 89 900 ss

Post by HIGHWAY89 »

Yeah mire looking at old pics and what you are saying and now it all looks right again from the starter solenoid forward to to the battery , I now see I have 6 x wires for the regulator, 2 x from alternator , 2x from battery terminals, and 1 blue and 1 grey . My old pics show really burnt and oily wires and very difficult to see order of connections and is that important
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Rewire issues on 89 900 ss

Post by HIGHWAY89 »

I think I remember slightly modifying the way that + pos cable run
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Rewire issues on 89 900 ss

Post by HIGHWAY89 »

Because I have modified and fixed some of the harness I've covered over some of the wire colors with heatshrink, just making it a bit tricky
Andrew2
paso grand pooh-bah
Posts: 574
Joined: Thu Oct 27, 2011 7:47 am
model: 750 Sport
year: 1988
Location: Wollongong,Australia

Re: Rewire issues on 89 900 ss

Post by Andrew2 »

I still have photos from my rebuild if it helps or check out my thread and you will probably find what you need to see in there.

Cheers
Andrew
HIGHWAY89
paso grand pooh-bah
Posts: 637
Joined: Sat Jul 16, 2016 6:35 am
model: 900 SS
year: 1989
Location: Australia

Re: Rewire issues on 89 900 ss

Post by HIGHWAY89 »

Thanks Andrew I will read right through your thread and see if it shines any light on the wiring for me, I have previously been following that thread and very impressed with the way you went about your build so thanks for sharing it with us, these threads all make it easier for the next guy to keep these awesome bikes on the road, it's just a matter of what you read or saw in which thread, I started my rebuild over 2 years ago and some stuff is not fresh in my mind, cheers
Andrew2
paso grand pooh-bah
Posts: 574
Joined: Thu Oct 27, 2011 7:47 am
model: 750 Sport
year: 1988
Location: Wollongong,Australia

Re: Rewire issues on 89 900 ss

Post by Andrew2 »

No worries mate :thumbup: . I still haven't fired mine up since getting it registered. I'm a bit slack of late :-(
MatthiB
Posts: 12
Joined: Sun Dec 31, 2017 8:35 am
model: 900 SS
year: 1990
Location: Germany

Re: Rewire issues on 89 900 ss

Post by MatthiB »

Andrew2 wrote:No worries mate :thumbup: . I still haven't fired mine up since getting it registered. I'm a bit slack of late :-(

I have read through your thread too!
:thumbup: :thumbup: :thumbup:
Really impressive work! Very well done!
What a difference from first to last pic, unblievable!
Andrew2
paso grand pooh-bah
Posts: 574
Joined: Thu Oct 27, 2011 7:47 am
model: 750 Sport
year: 1988
Location: Wollongong,Australia

Re: Rewire issues on 89 900 ss

Post by Andrew2 »

MatthiB wrote:
Andrew2 wrote:No worries mate :thumbup: . I still haven't fired mine up since getting it registered. I'm a bit slack of late :-(

I have read through your thread too!
:thumbup: :thumbup: :thumbup:
Really impressive work! Very well done!
What a difference from first to last pic, unblievable!
Thanks mate :thumbup:
Post Reply