Hi all, new owner of a 1987 Catalina 30 Mk II, with a question about a new issue on my engine panel. The older panel and wiring harness was replaced with a new one about 18 months ago when the Universal M25 diesel was rebuilt and a the transmission replaced. Panel worked fine for a good while. Now two components aren’t working:
1) the engine hours counter isn’t advancing, although the tachometer component of which it’s a part works fine;
2) the low oil pressure alarm horn isn’t working.
.
I had the panel out and did a continuity test on each component with the multimeter. Everything showed continuity but the alarm horn. I figured that could be the problem, so replaced it with a new one I ordered from Catalina Direct.
Before installing the new horn, I tested it with a small battery; it peeped just fine. So I uninstalled the prior one and installed and hooked up the new one in its place. Doesn’t work! Additionally, I tested the old one with the battery and it *did* work...??
.
What’s my next suspect? Could the oil pressure sender be kaput? Seems like it’s either that or a bad wiring connection somewhere. All the connections on the panel look and feel tight. Connections at the engine end look good too. The only wiring harness wire not connected to anything is the temp switch wire - which is ok because although the panel supports a coolant overheating alarm, my Universal M25 doesn’t come with the corresponding switch.
.
I‘ve studied the wiring diagram until I’m cross-eyed; but to this noob it’s hard to decipher...
.
Anybody been down this road before who might point me in a sensible direction for next steps? Thanks...
1) the engine hours counter isn’t advancing, although the tachometer component of which it’s a part works fine;
2) the low oil pressure alarm horn isn’t working.
.
I had the panel out and did a continuity test on each component with the multimeter. Everything showed continuity but the alarm horn. I figured that could be the problem, so replaced it with a new one I ordered from Catalina Direct.
Before installing the new horn, I tested it with a small battery; it peeped just fine. So I uninstalled the prior one and installed and hooked up the new one in its place. Doesn’t work! Additionally, I tested the old one with the battery and it *did* work...??
.
What’s my next suspect? Could the oil pressure sender be kaput? Seems like it’s either that or a bad wiring connection somewhere. All the connections on the panel look and feel tight. Connections at the engine end look good too. The only wiring harness wire not connected to anything is the temp switch wire - which is ok because although the panel supports a coolant overheating alarm, my Universal M25 doesn’t come with the corresponding switch.
.
I‘ve studied the wiring diagram until I’m cross-eyed; but to this noob it’s hard to decipher...
.
Anybody been down this road before who might point me in a sensible direction for next steps? Thanks...