Rostra Cruise Control Installation for the Honda

Rostra Cruise Control Installation for the Honda ST1300
These instructions will only serve as a supplement to the Rostra Installation Manual to cover the particulars for
installation in the ST1300.
Remove the following parts:
-Gas Tank
-Air Box
-Right and Left side plastic
-Left side mirror
Parts List:
-Rostra Cruise Control (http://www.mnrelectronics.com/par25roscrui.html)
-35013-MCA-000 SWITCH, STARTER STOP (Non-lighted GL1800 Goldwing Switch)
-Pulse Divider (http://www.taxicabelectronics.com/moreaccessories.htm)
-1/16” x ¾” x ¾” Aluminum angle stock
-1/8” x 1½” Aluminum Flat Stock
- 9 Pin Honda connector (http://www.electricalconnection.com/electrical-components/hitachi.htm)
-Misc. wiring hardware such as connectors and heat shrink tubing as required
Note: If you think you are going to have problems with maintaining 0 volts across the brakelight circuit because
you are running additional LED’s then download this supplement which will show you how to install a relay to
fix this problem:
http://www.dakotadigital.com/pdf/CRS-LED.pdf
Note: If you don’t want to use the Goldwing right side control then order the cruise control from Dakota Digital
with the HND-2 dash mount switch.
(http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=48/category_id=-1/home_id=1/mode=prod/prd48.htm)
Suggested Installation Order:
Install Goldwing Right Side Control (Mechanical Portion Only-Disconnect Throttle Cable at throttle
drum)
Optional: Install Turbo City Fuel Pressure Regulator (if you haven’t already)
Layout Wire Harness & Cruise Throttle Cable
Fabricate Cruise Throttle Cable Bracket and Cruise Unit Mounting Bracket
Prepare Extension to throttle drum
Re-connect Throttle Cable at throttle drum
Mount Cruise Throttle Cable Bracket
Install Throttle drum extension
Connect Throttle drum extension to Cruise Throttle Cable
Adjust throttle operation per Service Manual with AirBox and Front PAIR Hose temporarily installed
Install Cruise Unit Mounting Bracket
Install Pulse Divider (Cut C8 Capacitor)
Make all electrical connections required by Rostra Manual except for the control panel
Route the Goldwing control cable harness and determine final length of wires to 9-Pin Connector
Wire 9-Pin connector
Test Continuity of wires for 9-Pin connector
Connect 9-Pin connector to bike harness. Test operation of switches and buttons.
Connect Rostra control wires to the 4 wires for the Goldwing control cruise operation
Run diagnostics on Rostra Cruise Control
Install Cruise Unit onto Mounting Bracket
Synchronize starter valve per Service Manual
Re-Install Airbox noting new routing of front PAIR hose to Airbox
Goldwing Right Side Control (Mechanical)
- All plastic and the airbox should be removed.
- Loosen the throttle cable at the engine side to make the cables at the right control easier to
remove
- Remove the right side control and reuse the throttle pipe and grip, it fits in the Goldwing control
without modification
- Reposition the brake master cylinder as far up the bar as possible if needed.
- Test fit the Goldwing switch to determine the inclination that best suits your needs
- Mark the hole location then drill the hole
- Loosen the black cable ties holding the throttle cables to the bars
- Install the throttle cables to the throttle pipe and install the Goldwing switch
- Connector the brake switch wires to the brake switch contacts in any order. Clip the two wires
with the smaller connectors, these will not be needed.
Drill hole for Goldwing
Switch
Cruise Cable & Electrical Harness Routing
-Route and mount the end of cable before mounting the cruise module to the bike.
Routing Overview
Cruise Module
Connect to output from Pulse Divider
Bulkhead connectors Fig.
34 ‘M’ in Rostra Manual
Connect to Ignition Coil
Wire Harness from Cruise Module
VSS Wire (Gray)
Cruise Throttle Cable
Tach Wire
Cruise Throttle Cable
Routing Cruise throttle
cable through air inlet
opening to reach the other
side of frame. NOTE: DO
NOT route wire harness
here it should go under
the airbox (This is an
earlier photo)
Securing Cruise Module Throttle Cable End
- Thread the cruise throttle cable end per the Rostra Installation Manual
- Fabricate a small bracket using 1/16” x ¾” x ¾” Aluminum angle stock
Rostra Cruise Cable
Existing Throttle Cable
- Install the cruise throttle cable to the angle bracket with the 2 lockwasher nuts provided in the kit (G18)
- Re-connect Throttle Cable at throttle drum
- Position the angle bracket between the throttle cable bracket and locknut for the throttle cable
Route wire harness here it
should go under the
Throttle Cables
Pair hose under throttle
cable
-
Secure cruise throttle
cable with cable tie
through existing hole
Remove the PAIR valve hose from the left valve cover. Place the airbox end under the throttle
cable.
Temporarily install the airbox to verify proper throttle operation (no binding) at full left and right
steering lock. Adjust as needed.
Cruise Cable/Throttle Drum Interface
According to the Rostra manual the throttle must have at least 41mm of travel from closed to fully open
throttle{Pg 10}. The ST1300 has less than 30mm of travel so you must mount an extension to the throttle drum
to get the required travel. The extension should not interfere with the airbox when re-installed.
To minimize the fabrication I used a machined servo horn designed R/C models:
-Futaba Single Aluminum Horn Silver 1.5" (http://www2.towerhobbies.com/cgi-bin/WTI0001P?&I=LXFVK4)
Drill out to match the
throttle drum shaft diameter
Drill out to match
shoulder screw
File down boss
to ½ height
Rubber washer to take up slack
Shoulder Screw
Do not reinstall split washer
Boss toward rear of bike.
File down to ½ height
Add Internal tooth washer this side
Clocking the extension
90°
45°
The throttle drum will rotate through 90 degrees from fully closed to fully open so clock the extension
according to the diagram on the left.
Connect Throttle drum extension to Cruise Throttle Cable
- Install the Eyelet connector (G8) with the shoulder screw to the throttle drum extension
- Install one bead chain connector to the cruise throttle cable. Preposition the bead chain connector
cover (G5)
- Measure the length of bead chain (G3) that will be required (I used 3 beads)
- Preposition a bead chain connector cover on the bead chain and install through both bead chain
connectors. Move the bead chain connector covers into position.
Pulse Divider Installation
This circuit is designed to both amplify and reduce the frequency of the signal from the VSS. The output signal
from VSS is approximately 80,000 pulses per mile. To modify the signal to a range acceptable for the Rostra
Cruise module move the jumper to the ‘divide by 2’ position. Additionally, one capacitor (C8) needs to be
clipped off the circuit board to disable the low-pass filter.
Clip both leads of the C8
capacitor and remove
Move the jumper to the
‘divide by 2’ position
Connections:
12V Fused 12V. The Quartet harness is acceptable.
Ground Vehicle Ground
Output from Pulse Divider Connect to Gray Wire of the Rostra Cruise Bundle {Page 19 ‘F.’}
From VSS Connect to Pink wire with Green strip. (24-Pin connector. Bike side of the connector)
From VSS: Connect
to Pink wire with
Green strip
The pulse divider
should fit between the
cruise module and
metal frame
Switch Settings
Cruise Module Mounting
Please note that the Rostra manual specifically states to never mount the unit with the cable pointed down which
is precisely how this is being mounted. I am assuming they state this so condensation and water do not
infiltrate the connector and throttle cable housing interfaces. I removed the connector and added dielectric
grease in the contact area. I’m making the assumption that the throttle cable interface will never see the harsh
underhood environment of an automobile. This mounting orientation doesn’t effect operation.
Fabricate a flat mounting bracket using 1/8” x 1½” Aluminum Flat Stock. Use the diagram and photos below to
determine the hole locations and final installed orientation. Note the fasterners that were removed to gain
access to this area. The bracket will be mounted with one fastener to the pentagon-shaped fairing support. Use
a fastener with a low profile head.
Use a fastener with a
low profile head
Insert the selfthreading bolts
provided with kit
Mounting Bracket Orientation (Looking from left side toward tank)
Mounting Bracket Installed (Looking from tank toward left side)
Note: Do not install the Cruise unit onto the mounting bracket unit all switch settings have been made
and diagnostics have been performed to verify operation per Page 20 & 21 in the Rostra Manual. Insert
the self-threading bolts into the unit once before final installation so that the threads can be formed.
You will need to use force to separate the two fairing components when you do the final install of the
Cruise unit.
Final Installed Location & Position
Note: The throttle cable and wire harness must hang below the top of the radiator to avoid the space
occupied by the left storage compartment.
Goldwing Right Side Control (Electrical)
Wire the 9-Pin connector according to the diagram below
Black w/ GraySquares
⇓
White w/Green
3
White w/Black
⇓
White
Black w/White
⇓
Black w/White
Black w/Red
⇓
Black w/White
Yellow w/Red
⇓
Yellow w/Red
2
Black w/Gray squares
⇓
Green w/Yellow
4
1
Start Button when Free
2
Start Button when Pushed
3
Engine Stop/Start Rotary Switch (Supplies power to 2
4
Brake Switch
1
Blue w/White
⇓
Blue w/White
)
Connections for Cruise Function on Goldwing Switch
Rostra Harness
Goldwing Switch
Black w/yellow
ON
White
SET/COAST
White w/Yellow
RESUME/ACCEL
White w/Blue
- If you want to use the Reverse Shift switch as a On/Off for lights or other function note the wiring diagram
below.