Re: 93 Johnson 150 - tilt/trim causing short - need guidance
The Long Version:
I just got the boat, but this fourm has poven very helpful in the past, so I realize:
1. I need the shop manual. Right now I cant even figure out what model engine I have (there are like 30 in brp) any advice on how to first figure out what model I have, and then second advice on how/where to get a good manual (was not to pleased with my SELOC manual on my older boat)
--
Quick History
The boat sat for many years, I have tried to follow the steps in waking a sleeping outbord as much as possible.
- replaced lower unit oil
- replaced gas
- replaced main battery (all including trolls)
- replaced main battery cable to celenoid on the motor (both + and -)
- has a taddletail I think, so I can check the impeller if she ever fires
With all connections made, had all tilt/trim, had all gauges and lights working fine. When I would turn the key, the main fuse near the starter would blow
I struggled with it most of the day, then gave up and drilled the fourms here. Based on the suggestions I disconnected the tilt/trim at the engine.
At this point I had the following:
tilt/trim at the engine = working
tilt/trim on throttle/front = not working
Starter - working and the fuse does not blow. (engine wont fire, but hopefully unrelated problem)
If I plug back in tilt/trim, the fuse blows when I turn the key.
I assume this means that I have a short somewhere from the connector for the tilt/trim plug (male) at the motor forward to the dash and possibly ignition.
Working off this assumption I have found issues that cause me to question the integrity of this cable and I am struggling to determine in which wire the short exists (or how to find the correct replacement cable).
The connector (name?) for the tilt/trim at the motor at the plug has:
red/white - (to ground) 12v
blue/white
green/white
brown/tan
white/brown
Is the what I should expect from the plug (female) end of the connection?
I turned my attention to the cable run from the plug (male) down the cable, and found a short in the cable run. removed the short (by cutting section of the cable run and connecting them with inline connectors), but the problem persisted, removed the majority of the cable including sheathing, separated wires, could not find another short.
I have looked under the dash, but I have not cut all of those wires loose from the zip ties yet. When I trace the wires as good as I can by sight and hand it appears:
white/brown - connects to tilt/trim gague
brown/tan - connect to tilt/trim gauge
green/white blue/white and red/white - splits to front trim of boat and throttle trim (that is out of memory, will verify)
The wiring under the dash appears to be in good condition, no obvious place where the short is taking place.
The interesting thing to me is when I have a good fuse in, then tilt/trim work from the motor, the throttle, and front. However, when I turn the key on the fuse will typically blow, else it will blow when I turn her over.
Any suggestion for how to use the voltimeter to correctly identify which wire I should be focusing on as the culprit?
Thanks
Roy