Wiring and relays ...

   I'm still havin' issues with the voltage readings ... and here's what I'm
considering doing to solve them .
  I purchased a pair of Bosch-type relays , 30/40 amp units . I'me pretty
sure (gotta check the pinout to be certain) one will plug directly into the
OEM start relay plug - that original has GOT to be tired by now  . And it's
rated the same for current-carrying capacity .
  The other is going to be wired to (probably) handle the passing lamps only
, since they seem to draw the most current - headlights are about equal in
current draw/voltage drop . These will be wired to the NC contacts , the
ones that make when the relay energize coil is dead . The power side will be
wired directly to the battery via a 30 amp breaker . Well , actually to the
bat/regulator term on the input side of the main brkr .
  I'm wondering about the wisdom of putting the headlights on that circuit
too ... it would for sure give them full battery voltage , which is a Good
Thing . It would also give me one more point for a potential failure ,
which is a Bad Thing . The fact that it will be wired for "default ON" gives
me some confidence ...
  This circuit will be fed to the breaker(s) in the fairing with a 12 ga
wire , which is already in place . I ran it parallel with the main feed wire
shortly after buying the bike , in an effort to solve the problem I'm
working on right now - obviously it didn't work .
  Thoughts ? Modifications to my plan ? Am I being too anal ??
  Shirley a round is in order whilst we ponder these weighty matters !
--
  Snag
New back tire comin' on tuesday
so I'll already have the bags off ...
(the E3 on there now has over
15k which is a record for me !)

 
I think I already asked this, but have you subbed out a different gauge to
see if it's not just a bad gauge?

--
Old Crow
'82 FLTC(P) 'Mistress Pearl'
'87 FLTC 'Fugly'
'61 F-100
BS#133, SENS, TOMKAT, SLOB#13, MAMBM

 Old Crow wrote:

  You didn't , but somebody else did ... compared to my VOM , it reads a
little low at 12 volts , but it's not off *that* far . I think there might
be some connector blocks in the harness that could stand cleaning , but I'm
not going to strip the whole bike down to find them - right now . When I
take it apart for paint ... hopefully next winter , during dec/jan/feb .
--
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 On Thu, 25 Jun 2009 21:17:39 -0500, in rec.motorcycles.harley you
wrote:


I assume you did the alt AC output check already


over kill? 12g wire is HUGE, and unless you have found bad wiring IMHO
your wasting your time over voltage issues,  anyhow overkill is better
than not.

but if I did anything, I would run headlights as well as a relay
system (seperate from the passing lamps),  you can get a few more
candles burning out of them(actually it is pretty damn noticeable),
because you wont have the voltage drop through the wireing harness,
and THAT would take the strain off you factory wiring.  just drop the
relay setup right behind the headlight, there is plenty of room there

adding breakers is fine, but it will do nothing to help your voltage
issues as you know.

again find the cause of the voltage issues could be as simple as the
alt

 nospam@home.com wrote:

   Oh yeah , got 14+ at the battery at anything over 1800 Rpm's , no matter
what the load .



  I'm not just adding a breaker , I want to feed the lights (all of 'em)
from a separate circuit fed directly from the battery . The relay is to turn
'em all off while the starter is engaged . That 12 ga wire is already in
place , might as well use it ! I'm familiar with the issues over getting as
much voltage/current to the lights as I can , and the difference in
brightness I'll get by doing this . I can see the headlight dim when I apply
the brakes ... and I don't even wanna talk about the turn signals .
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