Blue Ox BX88100 - Manual (Page 5)

BX88100
Universal AutoStop™
Operation Manual & Installation Instructions
292-2215 Rev A Page 5 of 12 10/30/13
The AutoStop™ uses the towed vehicles brakes. Most vehicle’s brake lights work with the key in
the off or in the accessory position. This creates the possibility of the towed vehicle’s battery being
drained while towing as the brake lights are activated each time the brake pedal is depressed by the
AutoStop™. Included are electrical parts which bypass the towed vehicles battery while towing. The
only change you will notice to the towed vehicle is that the brake lights will only be activated by the
brake pedal when the ignition is in the “on” position. We also include a light indicator that is installed
in the dash of the towing vehicle which lights up when the brake pedal in the towed vehicle is pulled
on by the AutoStop™. (Figure 8)
1. Locate the brake light switch which is activated when the brake pedal is pressed down. Locate the
hot wire into the switch and the wire from the switch to the brake lights. You will need to splice into
the wire coming from the switch to the brake lights. Cut the wire at a convenient place and strip
the two ends.
2. If there is room, you can locate the relay where you cut the wires. If there isn’t room, splice wires
onto the ones you cut to give yourself working room. Black wire and butt connectors are supplied
in the parts sack.
3. Strip one end of the yellow wire and twist it together with the wire coming from the brake switch.
Crimp a female spade terminal on the twisted pair. Slide the terminal over the male terminal on the
relay labeled “87”.
4. Crimp a female spade terminal on the end of the wire going to the brake lights. Slide this terminal
over the male terminal on the relay labeled “30”.
5. Locate a bolt to use as a ground. Cut a piece of the black wire long enough to reach from the
relay to the bolt. Strip both ends of the black wire and crimp a ring terminal on one end and a
female spade terminal on the other. Put the ring terminal under the head of the bolt and the spade
terminal on the male terminal on the relay labeled “85”.
6. In the car’s fuse panel locate a fuse that is “hot” only when the ignition switch is in “on” position.
Use the mini fuse tapper with fuse, crimp a female spade terminal on the end of black wire and
attach it to fuse tapper. Cut a piece of black wire to reach from the fuse to the terminal on the relay
labeled “86”.
7. Route the yellow wire from the relay through the engine compartment of the car into the wiring
disconnect plug. Then from the wiring disconnect plug on the back of the coach along the bottom
of the coach and into the dash of the coach. Tie the wire to the frame of the coach with cable ties
or other suitable means.
8. Locate a suitable place in the dash and drill a half (1/2) inch hole for the light indicator. Crimp a
butt connector to both wires and insert the indicator into the dash.
9. Cut the yellow wire to length and attach it to one of the wires on the indicator. Locate a bolt to use
as a ground. Cut a piece of black wire to length and connect it to the other indicator wire, crimp a
ring terminal on the other end of the black wire and fasten it to the grounding bolt.
AutoStop™ Electrical Installation
continued to next page