Clocks For All Motorcycles, Snowmobiles, Bicycles and Jetskis

Cylinder Head Temp Installation Instruction

CAUTION: Disconnect the battery before installation. You need to put a quality ring terminal on end of the wire you choose. You will need to bend down the ring terminals so they will not hit the side of the cup or you will have a short. If you only use the wire, use two washers and put the wire between them. Tighten the nuts on the back of gauge only slightly more than you can tighten with your fingers. Six inch-pounds is sufficient. Over tightening could result in damaging the instrument and may void your warranty.

1. Temperature senders are available from Marlin Corporation
2. Be certain to use stranded insulated wire, not lighter than 18 gauge. It is recommended that the insulated wire terminals are preferable ring type to be used on all connections on the gauge or there are two copper washers that the wire can go between. The sender uses a blade type terminal that comes with the sender. There is also a black boot that should go over the sender head.

Where do I place the sending unit? You need to put the sending unit where it will sit flat on the rocker box or an engine mount coming from the heads. It would be best out of site under the gas tank. There are allen screws that hold the valve cover down that would be a good spot. You will need a little longer allen screw and you will need to get a spacer that will allow the sensor to sit flush to the valve cover, and will allow you to tighten the screw properly. These are only suggestions.
3. Connect a wire to the gauge stud marked "S" (signal) and secure with nut and lockwasher. Connect the opposite end of the wire to the terminal provided. Snap the terminal to the stud on the sending unit.
CAUTION -- Be certain the wire insulation is not in danger of melting from engine or exhaust heat or interfering with moving mechanical parts.
5. Connect a wire to the gauge stud marked "GND" (ground) and secure with nut and lockwasher. Connect opposite end to the motorcycle electrical ground, generally available from several locations.
6. Connect a wire to the gauge stud marked "I" (ignition) and secure with nut and lockwasher. Connect opposite end to a 12VDC circuit that is activated by the ignition switch.
7. Connect the blade terminal adjacent to the twist-out light assembly to the positive "+" side of the instrument lighting circuit. No separate ground is required for lighting.
Reconnect the battery.
8. You must make sure that the 3 legs on the back of the gauge will not hit the inside of the cup use the black caps. If you are just using the gauge, make sure that the 3 legs with the
wire will be insulated properly.
NOTE: To change the light bulb, twist black socket assembly one-eighth turn counterclockwise until it pops out. Pull bulb out of socket assembly. It is a GE No. 16 instrument lamp.
To remove the temp gauge from the cup, push a long allen wrench in the bottom hole or the hole on the side, and push the gauge out. If you have the mount with the oil gauge put the set screw through the cup and then tighten it against the oil gauge and that will hold that in place.
You will put the cup in the mount the way it is best for you and tighten the set screw against the cup to hold it in place.
The temp gauge will be held in place by pushing on the chrome ring on the gauge and the rubber will hold the gauge in place just fine.

These Oil gauges will fit our mount. Arlen Ness oil gauge and the Harley-Davidson Part # 75133-99 $66.95 will fit the Dual cam and the EVO. Do not use the bracket that comes with it.
There many other brands oil gauges to pick from. The size of the hole the oil gauge will fit in is 1 1/2"