![]() ![]() Then connect these wires to TS relay terminals 4 and 8 respectively. Switch on, operate the TS switch, verify power on these wires, and switch off. In the engine bay, find the green/yellow and green/blue wires near the TS relay. The lamp socket needs to be grounded on the dash panel, so either scrape off some paint or install a separate ground wire for this lamp mount. Also connect the Light Green wire to the TS warning lamp (permanently connected with original parts), and plug the lamp into the dash socket. ![]() This is entirely due to orientation of the switch manual actuator lever hanging down on the MGA where it extends upward on some other cars). (You should notice that the L and R terminal labels are swapped for the MGA, where L actuates the right signal and R actuates the left signal. Then connect the green/yellow and green/blue wires to the L and R terminals respectively. Switch on, operate the TS switch left and right, verify power on the output terminals of the switch, and switch off. Connect this last green wire to the "F" terminal on the TS switch (F is for "flasher", but not on the 1500). Switch on, verify power at the output end of that wire, and switch off. See here: ET-101f - Switch On and Fused, 1500. The third green goes to the Turn Signal switch. Install a snap connector on the switch end of this green wire to protect it from any ground short, but do not connect the switch. A second green is power feed to the heater blower switch. Then connect those three greens (with ring terminals) to the "B" terminal on the petrol gauge. Switch on, verify power on this wire, and switch off. One green is power input from the FB (main harness wire). Then get behind the dash panel, find three green wires together (one from the main harness and two from the dash harness). Leave wiper motor, brake switch and flasher unit green wires disconnected from FB at this time. You might alternately use trial and error to connect one wire at a time, switch on, and check with test light to see which wire has the power at the output end. Use a continuity tester to discover which green wire goes to the back of the fuel gauge, and connect that to FB terminal A4 first. Three of these wires need to be connected to make the 1500 turn signals work. There are two A4 terminals on the FB holding four green wires. Install the 17/35 fuse (or a regular 20-amp substitute fuse), switch on, use test light to verify power on the A4 terminals of the FB, then switch off.įrom here I will address the 1500 type turn signals and brake lights first, being the earlier (and more complex) of the wiring flavors. (There is no need at this time to have power on white wires for ignition coil or fuel pump). Once connected at the switch, turn on the Ignition Switch, use test light to find white wire near FB that is hot, and connect that one wire only to terminal A3. Now see here: ET-101e - Switched On and Fused. One goes to the Ignition Warning Light, which is still not connected on the other side, so is of little concern whether that white is connected or not. You can connect both (2) white wires to output side of Ignition Switch. Okay, so general lighting is all working, and now we get into brake lights and turn signals which are fused, so start with power to the Fuse Box. Wiring Harness Installation, Wire By Wire, of 5 - ET-100KĮT-100I - Grounding, Tools, and ResistancesĮT-100K - 1500 Type turn signals and brake lights- (you are here)ĮT-100L - 1600 Type turn signals and brake lightsĮT-100M - Everything that is not lighting circuits (1600 Amphitheatre Parkway, Mountain View, CA 94043, USA („Google“)), for the purpose of optimizing and analyzing our website.MGA wiring harness installation, wire by wire - 3 of 5 GDPR, it is in our legitimate interest to use the service "Google Analytics", a web analyzing service provided by Google Inc. (1600 Amphitheatre Parkway, Mountain View, CA 94043, USA („Google“)), for the purpose of optimizing and analyzing our website. The data's are kept save inside the back-office, and serve solely as statistical data for improving our services and products. A Shop Cookie, which saves data about orders, carts, IP of the clients. NameĪ Shop Cookie, which saves data about orders, carts, IP of the clients. Statistic cookies help website owners to understand how visitors interact with websites by collecting and reporting information anonymously. ![]()
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