- Jun 30, 2023
- 368
- Boat Info
- 2007 44 Sedan Bridge, Raymarine chart plotter x 2, radar, sounder, auto pilot, Starlink.
- Engines
- Cummins QSC-500's
One more thing. The fluxgate compass for the Ray AP is indeed behind the couch. Pic below.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
That is not a factory install. Originally, there was one large, 4-channel amp where the two amps are now. Two channels ran the two cockpit and two bridge speakers (wired in parallel) and the other 2 channels were bridge to run the sub. It's hard to tell from your picture what has been done there, but it looks like two line level inputs to each, the one on the right being L/R, and the amp on the left possibly Y input for the sub (both RCAs the same color).Made some headway on the AC relay box and amplifier mysteries. I found the AC relay behind the couch, took the cover off and it looks factory under the cover. I checked incoming voltage and there is none.
What I found was that the cable from the panel to the relay box had been cut behind the panel and a new cable was run straight from the panel breaker to the pump. The cable going from the box to the pump was cut near the pump. I ohmed out both cables and they appear to be fine. Even it they are not, pulling new ones isn’t a big deal.
I can’t seem to find a reason for bypassing the relay box. I have good trigger voltage from both AC’s and I hear the relays click when the AC compressor comes on. I’m thinking I’ll just reconnect everything as it should be and see what happens.
Issue 2, amplifiers. I found the amps behind the couch. There is no power going to either of them. I’m guessing that these amps were to supply the interior speakers? The boat has a JL Audio head unit under the TV connected to the cockpit speakers. The subwoofer doesn’t work because I’m pretty sure the 2 speakers are connected directly to the head unit with no amp.
I was thinking of adding an amp to the JL head unit to get the subs working. That would go in the space under the TV. Since the 2 amps behind the couch don’t work, I’m thinking get rid of them and maybe install a 2000W inverter back there tied to the outlets. Maybe 2 1000w inverters, one for port outlets and one for stbd.
With the amps gone, I could add another head unit dedicated to the interior speakers. There is a small amp beside the AC relay also. Can anyone confirm that these amps are tied to the interior speakers? Pics below. Thanks.
View attachment 152697View attachment 152698
We r thinking sell the 44 DB and get a cruisers yacht 52 Express. At almost 67 and 68 yrs old not having the bridge steps would be nice. In fact I already fell down them.
Thanks for the detailed response. Seeing as how none of it is factory, chasing the audio wiring is probably futile. The AC on the other hand, does need to be retired to factory schematics.That is not a factory install. Originally, there was one large, 4-channel amp where the two amps are now. Two channels ran the two cockpit and two bridge speakers (wired in parallel) and the other 2 channels were bridge to run the sub. It's hard to tell from your picture what has been done there, but it looks like two line level inputs to each, the one on the right being L/R, and the amp on the left possibly Y input for the sub (both RCAs the same color).
The small amp near the AC relay runs the two salon and two master stateroom speakers (also wired in parallel). The stateroom speakers were wired via a balanced volume controller in the stateroom. I can see from your picture the speakers seem to still be wired in parallel, but there is no line-level (RCA) input.
On my boat, no speaker wire made its way to the head unit under the TV s no speakers were powered by the original Clarion head unit.
The amps should be wired for power and then typically would be turned on using the remote trigger (blue wire).
Here is what the original install looked like:
View attachment 152708
View attachment 152707
I replaced the head unit with a Fusion RA770, ran additional line level cables to the area behind the couch such that I have a total of 9 (one for each channel: two plus one on the bridge, two in the cockpit, two in the salon, and two in the stateroom), and added a 6- and two 2-channel Fusion amps (should have done a 4-channel instead of the 2x2s) and can control each zone independently from the RA770.
All speakers are now Fusion Signature Series.
I use the small Fusion wireless remotes anywhere I want control capability.
I'll try to remember to take some pictures this weekend.
There has been a lot tried and discussed regarding inverters, what would you actually power with them, and the amount of battery capacity needed to practically use them. When you run some power budgets, the feasibility and usefulness raises a lot of questions.
It sounds like the PO might have been a bit of a DIY hack! Any time you spend mapping and tracing everything out and correcting poor installations will be very valuable.
Thanks for the detailed response. Seeing as how none of it is factory, chasing the audio wiring is probably futile. The AC on the other hand, does need to be retired to factory schematics.
The inverter(s) would just feed the port and stbd outlets, which would be light loads like phone chargers, starlink and TV.
Here are the part numbers I order for my 2007 44DB when I replaced themSo on a 2007 DB with QSC-500’s, does anyone know the model number of the groco strainer used? I want to order spare caps but can’t figure out what I have.
Id like to do the same for the AC and genset strainers. All I know about them is that they use a BP-3 strainer.
Thanks
The answer is Yes for the QSC common rail engine. When you replace an injector the "Cummins Injector Code" needs to be entered into the ECM. The data code is stenciled on the side of the injector. The Cummins Insite service software is needed to do this. They had to be done when the injectors were replaced on my engines.I believe I have a bad fuel injector on port motor. The cost for a tech to plug in a laptop is far more expensive than send all six injectors out to be cleaned and tested.Then rebuild or replace bad one. My question is on the QSC motors does the new injector need to be programed ?
thanks for the quick responseThe answer is Yes for the QSC common rail engine. When you replace an injector the "Cummins Injector Code" needs to be entered into the ECM. The data code is stenciled on the side of the injector. The Cummins Insite service software is needed to do this. They had to be done when the injectors were replaced on my engines.
My digital temp gauges typically are around the mid-170s while on plane. They drop pretty quickly to the high 150s at cocktail speeds.Another one for the brain trust. So I have never really thought my analog gauges were reliable. When i've checked with others with similar motors they say their temp readings sit right at 160 mine never has. Mine tend to sit around 170. Once in a while the port motor will approach 178 or so however the starboard one never waivers .This is generally happens about 2 hours into cruising. If I slow down for a few mins and get back on plane it would drop back down to 170 and sit there for a few more hours. Have serviced the coolers and raw water system and no change same behavior year after year. This prompted me to install a nmea temp sensor into the coolant port on top of the exhaust manifold. When bringing the boat to her winter home this weekend (3 hour run) same thing happened however the digital temp sensor said my coolant temp at the manifold was in the 155-158 range. I also shot the manifold with an ir gun and it said the exterior of the manifold was in the 170's. I'm in the midst of replacing the coolant and maybe the thermostat as well but i doubt the thermostat is not functioning as the nmea sensor says its within range.
Also note my gauges have been replaced in the past to fix a different issue. Any ideas?
Some pictures...That is not a factory install. Originally, there was one large, 4-channel amp where the two amps are now. Two channels ran the two cockpit and two bridge speakers (wired in parallel) and the other 2 channels were bridge to run the sub. It's hard to tell from your picture what has been done there, but it looks like two line level inputs to each, the one on the right being L/R, and the amp on the left possibly Y input for the sub (both RCAs the same color).
The small amp near the AC relay runs the two salon and two master stateroom speakers (also wired in parallel). The stateroom speakers were wired via a balanced volume controller in the stateroom. I can see from your picture the speakers seem to still be wired in parallel, but there is no line-level (RCA) input.
On my boat, no speaker wire made its way to the head unit under the TV s no speakers were powered by the original Clarion head unit.
The amps should be wired for power and then typically would be turned on using the remote trigger (blue wire).
Here is what the original install looked like:
View attachment 152708
View attachment 152707
I replaced the head unit with a Fusion RA770, ran additional line level cables to the area behind the couch such that I have a total of 9 (one for each channel: two plus one on the bridge, two in the cockpit, two in the salon, and two in the stateroom), and added a 6- and two 2-channel Fusion amps (should have done a 4-channel instead of the 2x2s) and can control each zone independently from the RA770.
All speakers are now Fusion Signature Series.
I use the small Fusion wireless remotes anywhere I want control capability.
I'll try to remember to take some pictures this weekend.
There has been a lot tried and discussed regarding inverters, what would you actually power with them, and the amount of battery capacity needed to practically use them. When you run some power budgets, the feasibility and usefulness raises a lot of questions.
It sounds like the PO might have been a bit of a DIY hack! Any time you spend mapping and tracing everything out and correcting poor installations will be very valuable.
Thanks or the pics. I think what might be going on is someone replaced the am-s at some point, then sometime later replaced the head units and speakers with JL Audio. The amps are not JL Audio. Currently the head units are wired directly to the speakers with no amp and no sub. This kind of works for me so this project is down the list a ways.Some pictures...
Zones on the RA770:
View attachment 152966
Amps:
View attachment 152968
View attachment 152969
Flybridge speakers (Fusion Signature Series 3 6.5" Coaxial + Fusion Signature Component Tweeters):
View attachment 152970
Flybridge sub (Fusion Signature 10" fits original cutout):
View attachment 152971
Cockpit speakers (Fusion Signature Series 3 8.8" Coaxial. I filled-in the holes from the original component tweeters):
View attachment 152972
The 8.8s really sound good. You can also see a Fusion wireless remote beside the patio door. Stick-on...can be removed and relocated easily.
All amp settings are through the RA770 DSP.
You may also notice in the port cockpit picture that there are no step courtesy lights. I removed them and had the holes patched with the intention of putting something more modern and more subtle. Turns out I like the clean look, and the light they provide is not necessary at all, so I may not replace them. Wiring is all there.
View attachment 152973
My temps are steady at the 170 range. However, I have seen it spike one time after I removed the cap and tested the coolant. As soon as I came off plane the temp dropped back to normal and no spikes there after. I’m thinking I introduced air into the system when I removed the cap and it took a cycling to run it out. At least that is my guess. A quick thing to eliminate is the cap by switching with the other engine. Otherwise, if your impellers, coolers and heat exchanger are good, there is not much else. At least other than your intake screen and exhaust mixers. Then again it could be sender or garage related.Another one for the brain trust. So I have never really thought my analog gauges were reliable. When i've checked with others with similar motors they say their temp readings sit right at 160 mine never has. Mine tend to sit around 170. Once in a while the port motor will approach 178 or so however the starboard one never waivers .This is generally happens about 2 hours into cruising. If I slow down for a few mins and get back on plane it would drop back down to 170 and sit there for a few more hours. Have serviced the coolers and raw water system and no change same behavior year after year. This prompted me to install a nmea temp sensor into the coolant port on top of the exhaust manifold. When bringing the boat to her winter home this weekend (3 hour run) same thing happened however the digital temp sensor said my coolant temp at the manifold was in the 155-158 range. I also shot the manifold with an ir gun and it said the exterior of the manifold was in the 170's. I'm in the midst of replacing the coolant and maybe the thermostat as well but i doubt the thermostat is not functioning as the nmea sensor says its within range.
Also note my gauges have been replaced in the past to fix a different issue. Any ideas?
Some pictures...
Zones on the RA770:
View attachment 152966
Amps:
View attachment 152968
View attachment 152969
Flybridge speakers (Fusion Signature Series 3 6.5" Coaxial + Fusion Signature Component Tweeters):
View attachment 152970
Flybridge sub (Fusion Signature 10" fits original cutout):
View attachment 152971
Cockpit speakers (Fusion Signature Series 3 8.8" Coaxial. I filled-in the holes from the original component tweeters):
View attachment 152972
The 8.8s really sound good. You can also see a Fusion wireless remote beside the patio door. Stick-on...can be removed and relocated easily.
All amp settings are through the RA770 DSP.
You may also notice in the port cockpit picture that there are no step courtesy lights. I removed them and had the holes patched with the intention of putting something more modern and more subtle. Turns out I like the clean look, and the light they provide is not necessary at all, so I may not replace them. Wiring is all there.
View attachment 152973
So glad you went there. Some one on here a couple of years ago, posted (with pic's) about doing those as maintenance and it brought back memories of the old ford V-6's that had 2 T/stats.So I found the reason for the higher temp on my port motor.
So I found the reason for the higher temp on my port motor.