Blueghost924
Petty Officer 1st Class
- Joined
- Sep 19, 2013
- Messages
- 250
I bought a 1985 Renkin that has a 1982 Mercruiser 470 with the typical round plug engine wiring (9 pin I believe). It runs through the boat and up to the center console, where it plugs into the instrumentation harness via an 8 pin rectangular connector (although there's only 7 wires). BTW - in looking at the wiring inside the console, it's somewhat of a mess. I'm facing a couple of problems:
1. The key ignition switch has been completed disconnected. I've looked at several wiring diagrams from the Mercruiser manuals I've downloaded, and I'm just not quite sure which color wires goes to the 3 connections on the ignition switch (and where the wires come from). A couple of diagrams mention a red/yellow wire, but I don't see a red/yellow wire, just a yellow. How do I wire this?
2. The large 10 gauge red wire on the rectangular plug has been cut by the previous owner right at the base. Looks like the other end is hanging from a 10 gauge red wire connected to a long terminal strip. Does this make sense as to where it should be re-connected at?
I've traced the 7 wires on the plug, and here's the order and where they appear to go from left to right on one side:
Tan - Temp Gauge
Blue - Oil Gauge
Purple - Oil and Temp Gauges
Red - ?? (appears to connect up to terminal strip) (10 gauge)
On the other side left to right:
Black - Oil Gauge (10 gauge)
Grey - Tachometer
Yellow - not connected, just hanging free
To figure out this mess, I've looked online for Mercruiser instrumentation wire harness. On Basic Power Industries' website, they have a MAR 6108 part number that seems to match up with what I have. Is there another or better source of a new instrumentation wire harness?
Help!
1. The key ignition switch has been completed disconnected. I've looked at several wiring diagrams from the Mercruiser manuals I've downloaded, and I'm just not quite sure which color wires goes to the 3 connections on the ignition switch (and where the wires come from). A couple of diagrams mention a red/yellow wire, but I don't see a red/yellow wire, just a yellow. How do I wire this?
2. The large 10 gauge red wire on the rectangular plug has been cut by the previous owner right at the base. Looks like the other end is hanging from a 10 gauge red wire connected to a long terminal strip. Does this make sense as to where it should be re-connected at?
I've traced the 7 wires on the plug, and here's the order and where they appear to go from left to right on one side:
Tan - Temp Gauge
Blue - Oil Gauge
Purple - Oil and Temp Gauges
Red - ?? (appears to connect up to terminal strip) (10 gauge)
On the other side left to right:
Black - Oil Gauge (10 gauge)
Grey - Tachometer
Yellow - not connected, just hanging free
To figure out this mess, I've looked online for Mercruiser instrumentation wire harness. On Basic Power Industries' website, they have a MAR 6108 part number that seems to match up with what I have. Is there another or better source of a new instrumentation wire harness?
Help!