A radio noise suppression choke wired in series with the constant voltage supply lead reduces the noise. Because vintage Mustangs were born in the age of AM radio, this pulsing causes radio interference. I had him convert the Ammeter to a Voltmeter on my 67 and was happy with it. They should be by-passed, and then install a VOLT gauge. It is a micro-fine, constant pulsing process of contact points that keeps voltage close to five volts. Home Catalog Ordering & Shipping AMP gauges at the dash are troublesome. "Bimetallic" means two metals - two dissimilar metals that expand and contract at different rates to open and close contact points inside the voltage regulator. Voltage regulators fail when contact points burn and pit or the resistor burns out and doesn't get warm anymore. The G1XV also comes with a small 'Volts' label that you can apply to the gauge hood if desired. It has a new overlay that duplicates the original -60 / +60 amp scale, but has been modified to read 10 / 15 on a volt scale. It is this balance of heating element and bimetallic arm with contact points that regulates current flow to your instruments in half-second pulses of electricity. The G1XV is the Amp meter from a 67 or 68 XR7 converted to read volts. Going to get Redline Gauges to do the voltmeter conversion. Inside, the voltage regulator has a bimetallic arm and heating element (resistor). But Ive also read where someone also rerouted the ammeter wires at the bulkhead or made a modification since that current is still needed to power other things in the dash. If anyone else has done this, I would like to know what gauge you used and/or some tips on going about it.Temperature, oil pressure, and fuel quantity gauges operate on five-volts of regulated current thanks to a small voltage regulator on the back of the instrument panel, also known as a voltage limiter or voltage reducer. So this means either I find a way to house the same size volt meter in the 66 cluster in place of the ammeter, or I will need to just disconnect the ammeter and not have any meter at all! mustang alternator wire pa performance 3g upgrade premium kit power 1g amp wiring. I do "not" want to use an external gauge outside of the instrument cluster. The ammeter circuit is protected by 2 red 20 gauge wire links Fuse. ![]() Core charge includes both lens and amp meter. The longer 200MP adhesive is in place the stronger it binds. Includes New XR7 Amps overlay made from top quality 3M 467MP and use 200MP adhesive. The alternator will not ground properly without a ground wire from the Alt. I know the wiring may be different, and know that will have to be modified. These are original amp meters converted from reading amps to reading volts. Alternator Ground: Many mounting brackets are powder/clear coated, painted, or plated. We splice and look to factory fuse boxes when adding circuits, Jim tells us. Is there a volt meter that will fit into the 66 cluster in place of the ammeter? even if it means some "minor" modification to the housing. Jim Thayer at Alloy Metal Products, which makes outstanding reproduction wiring products, told us one of the biggest mistakes people make is to second-guess electrical engineers. This will work for any Ford car with an ammeter gauge. Using an alternator with higher output capacity is dangerous and could cause a fire. 2) Classic Instruments’ Amp gauge should only be used on vehicles with alternators rated at 60 Amps or less. ![]() I want to go with at least a 100 amp alternator, meaning I should probably change over to a volt meter. Rocket Man Innovations has a direct amp meter to volt meter replacement. Amp Gauge Wiring 1) Always disconnect the ground lead from the vehicle battery before wiring any gauge. So here's my dilemma, The original ammeter in the instrument cluster works great but if I recall only is sufficient to about 60 amps. These Indiglo pads do for the instrument lighting what LED's do for tail lights! I can actually see the gauges now at night! :: I already have an idea on how to do this, so that's not the problem. So I would have to modify the pad to work with the volt meter which will also make the face look similar to stock. Black Camera Case bezel, standard speedometer. ![]() If it was a voltmeter then removing it or breaking the circuit would make no difference. Home / Direct Fit Gauge Sets / Ford / 1967-68 Mustang Package 1967-68 Mustang Package. If you break that circuit then there should be no power to the ignition switch. ![]() Great quality and fit, left and right use same part, sold separately. The amp meter circuit is usually the path for current from the Altenator output to the switch. I just purchased and have already installed the new Indiglo light pads on my instrumentation for my 66. Re-manufactured XR7 Volt Meter converted from Original Amp Meter to Volt Meter for the 67 and 68 Mercury Cougar. After reading the title I'm confused as well.
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