Gauge problems 1992 Force 120 on 1993 Sylvan ProSelct

[pigeon]

I changed out the template that holds the gauges in place,. I did tag the wires but think I may have mixed up some on re-installation. Now every tine the hour meter pulses the voltmeter needle jumps. Also not sure fuel gauge is no working.

I have a Tachometer, speedometer, fuel gauge, hour meter and volt meter. All Teleflex gauges
The wiring is as follows:

Tach -
top terminal, blue wire
+12V terminal, purple wire
Grd terminal, black wire
PUL terminal, grey wire

Speedo (when looking from back)
terminal on top left, black wire
terminal on top right, blue wire

Fuel
top terminal, blue
I terminal, purple'
Grd terminal black
S terminal
The Tach and Speed

Volt
top terminal, blue wire
I terminal, purple wire
Grd Terminal, black wire
S terminal, not used

Hour
+ terminal connected to the I terminal of voltmeter
- terminal connected to the Grd terminal of voltmeter.

Below ts a picture. Help would be appreciated.

 

[jerryjerry05]

I think the wiring color code is:
The purple is usually a power lead.
The Tach -grey
Fuel=pink
Hour-red or Purple
Volt-red or purple
Speedo-purple.

 

[pigeon]

Update. I found a second ground wire behind the dash that was not terminated. Now all gauges, lights and horn work as they should. Simple fix but spend a lot of time finding the issue. Thx