Note: This article applies to RM-1 CG Angular and Round mirrors. The stem lights work only when RM-1 CG is connected to the CHIGEE SR-1 Radar.
You can mount RM-1 CG on an M10 screw-in mirror mount, plug it into the SR-1 main harness, and see SR-1 alerts in the mirror stems.
Before you start
Before you install RM-1 CG, confirm that your original mirrors screw into M10 mounts, and check the thread pitch and direction. RM-1 CG fits P1.50 or P1.25 threads and does not fit the BMW R 1300 GS or R 1300 GS Adventure. If you are still choosing a version, see Which RM-1 mirror fits my motorcycle?.
Install and power SR-1 first if you want the stem lights to work. Follow SR-1 radar: compatibility, setup and everyday use and Power and wire your SR-1 radar for SR-1 mounting and power wiring. This article covers only how RM-1 CG mounts and plugs into the SR-1 main harness.
Read the RM-1 for SR-1 user manual (PDF) and keep it with you during installation. The same steps apply to the Angular and Round shapes. The RM-1 CG product page lists the following in the box:
RM-1 CG rearview mirror (left) × 1
RM-1 CG rearview mirror (right) × 1
6 mm spacer × 2
M10 × 35 mm P1.50 right-hand thread bolt × 2
M10 × 35 mm P1.25 right-hand thread bolt × 2
M10 × 35 mm P1.25 left-hand thread bolt × 1
Silicone cable tie × 2
SR-1 is sold separately and is required for alerts. It comes in its own box with the radar module, two standalone indicator lights, and its wiring and mounting parts.
Install RM-1 CG and connect it to SR-1
To install RM-1 CG, fit the mirrors on the M10 mounts, then plug the mirror harness into the SR-1 main harness. You do not need to cut or modify wiring for the mirrors themselves.
Check that your original mirrors screw into M10 mounts, and note the thread pitch (P1.50 or P1.25) and the thread direction (right-hand or left-hand).
Identify the left and right RM-1 CG mirrors from the L and R markings, and from the arrow labels on the connectors.
Remove the original mirrors. Install each RM-1 CG into the M10 mounting hole with the matching bolt from the box. If there is not enough room between the mirror and the mount, use the included 6 mm spacers listed on the product page.
Plug each RM-1 CG harness into the SR-1 main harness. Power on the system and check that the mirror indicator light turns on. Sit in your normal riding position, adjust each mirror, and check clearance as you turn the bars.
Important: The stem light is a backup, not permission to change lanes. Check your mirrors and blind spots, and make riding decisions based on what you see.
What the stem lights mean
The RM-1 CG stem lights work the same way as the SR-1 indicator lights. A steady light means something is in that direction. A rapidly flashing light means something is closing fast and needs your attention.
You can adjust SR-1 sensitivity and set the activation speed to 0, 10, 30, or 50 km/h (0, 6, 19, or 31 mph) in the CHIGEE GO App or on a compatible CHIGEE Display. See Understand SR-1 alerts and settings for warning-light behavior and other settings.
With SR-1 paired to an AIO-5 or AIO-6 series display, sound alerts play through the display speaker. They do not play through a Bluetooth headset. XR-2 does not show SR-1 alerts on screen. AIO-5 Play has no built-in speaker, so it cannot play these sound alerts.
Indicator electrical ratings
The built-in indicator in each RM-1 CG mirror operates at DC 9.5 V, with a rated power of 1 W and a rated current of approximately 105 mA. The SR-1 indicator output channel supplies DC 9.5 V, with a maximum total output current of 600 mA. See Power and wire your SR-1 radar for SR-1 power details.
If it doesn’t work
If an RM-1 CG stem light does not turn on after you connect it, check the SR-1 power and the mirror connections first.
Confirm that SR-1 is installed, powered, and working, using SR-1 radar: compatibility, setup and everyday use and Power and wire your SR-1 radar.
Check that you have identified the left and right mirrors correctly, and that each RM-1 CG harness is fully plugged into the SR-1 main harness.
If one light is still out, use the connection checks in Mount, replace and troubleshoot SR-1 warning lights and the alert checks in SR-1 radar not alerting or behaving unexpectedly.
If the cause is still unclear, contact us with your motorcycle model, photos of the mounts and connectors, and a description of what the lights do when you power on the system.
You can ride RM-1 CG in the rain. Do not aim a pressure washer at the mirror stems. Fold each mirror inward about 130° for parking or storage, then fold them back out before you return to the road.
FAQs
Can I use RM-1 CG without the SR-1 Radar?
Yes, as a regular rearview mirror. The stem indicators light up only when RM-1 CG is connected to SR-1.
Do I still need the SR-1 indicator lights?
No. With RM-1 CG plugged into the SR-1 main harness, the alerts show in the mirror stems, so the standalone indicator lights are not needed.
Does RM-1 CG fit the BMW R 1300 GS?
No. RM-1 CG does not support the R 1300 GS or R 1300 GS Adventure. If your motorcycle has factory Riding Assistant, choose RM-1 for BMW. See Which RM-1 mirror fits my motorcycle?.
What is the difference between the Angular and Round shapes?
The Round shape is the first-generation RM-1 CG. Its indicator light sits lower on the stem and is longer than on the Angular shape. The Round version folds from the base, and the Angular version folds from the mirror arm. Both shapes connect to SR-1 in the same way.
Do I need to cut or modify any wiring for the mirrors?
No. RM-1 CG plugs into the SR-1 main harness. Only SR-1 needs wiring to the motorcycle’s 12 V system, which is covered in Power and wire your SR-1 radar.
Can I hear the radar alerts?
With SR-1 paired to an AIO-5 or AIO-6 series display, sound alerts play through the display speaker. They do not play through a Bluetooth headset. XR-2 does not show SR-1 alerts on screen.